Sure I do.
The thing about a prejudice is it can affect your behaviour without you even really being aware of it's existence.
Every time I subtly assume something about a person because of the way they dress, the colour of their skin, or something they've said (or any of a number of other factors too numerous to list), that's a prejudice of some kind, whether I'm specifically aware of it or not.
Still, the most amusing, if only for the irony of it, is that I have a fairly strong prejudice against people that are prejudiced.
(Well, I usually say I'm intolerant of people that are intolerant.)
For one thing the statement itself is an exaggeration of how I actually feel, but the more obvious point is that if you take it at face value it seems kind of hypocritical.
And while it actually is is hypocritical on several levels, (aside from anything else, I certainly don't just tolerate anything), it does make some degree of sense. If you don't like prejudice and intolerance, it's rather counter-productive to tolerate it in others.
Sure, not accepting it in others makes you prejudiced yourself, ironically, but you can't reduce the consequences of something if you just accept people doing it because to do otherwise would somehow be hypocritical.
... See how much of a headache that becomes? XD
But in all seriousness, I know I am prejudiced in several ways because of how I react to certain kinds of things.
To give you a concrete example, I was out at about 10 in the evening, and wanted to get some stuff from a small supermarket. However, there were two black men hanging around outside wearing hoodies. And it made me pretty nervous.
In England, there's an image of youths wearing hoodies as being troublemakers and thugs, and I was alone late at night.
Now, I don't usually think of myself as racist either, but when looking at it later it did give me pause to wonder if this had any influence on how I felt.
Now, there's at least 3 potential prejudices at work in this case, but I certainly wasn't thinking about them explicitly at the time. It's only after the fact when I stopped to think about why I felt so nervous with them being there...
-The first is a group of youths in hooded tops hanging around a shopfront late at night... That's a major thing in a lot of places, but in England in particular there's an association with that potentially being a group of troublemakers.
-The second point being that since I was a woman out alone in the evening, a group of men hanging around can seem like a threat just for being men...
- Finally, we have the one that's perhaps the most painful to admit. (It's not inherently any worse than the other prejudices involved in the example, it's just because of the history behind it, people are a lot more sensitive about it.) - which is that they were black. - Now, given the other factors, I'm not sure how much influence it actually had on me feeling nervous about them being there, but it's one of those things that makes you wonder... Because they were black, and I was nervous about their presence, was that in any way reflective of any deeply engrained prejudices I'm only vaguely aware of, or was it perhaps just an unfortunate coincidence to go with the other things about them that were already causing me to worry?
Regardless of the specifics though, all 3 factors are examples of ingrained prejudice. I was getting nervous based on little more than a superficial judgement of what these people looked like, and what they were doing. (Which wasn't much; just standing around).
Now, unfortunately, even if my fears were justified (which they weren't), the way I made that decision is nonetheless an example of prejudice; I assumed something negative about some people I'd never met, based on a very superficial judgement.
But in the end I guess it just goes to show how difficult it is to avoid prejudice completely.
(Which shouldn't be a huge surprise when you think about it... I mean, 'Discrimination' is a term that comes from the ability to 'discriminate', which, when taken in it's most neutral context actually means to be able to tell things apart - If a person truly lacked the ability to discriminate, then they'd pretty much be incapable of basic thought. - To be able to tell the difference between a tree and a car is discrimination. - That's obviously not what people are thinking of when they use that word, but part of the problem is a direct consequence of this otherwise vital ability to be able to tell things apart.)