I can make a "four" with my hands by pushing my pinky to my palm and keeping my other fingers outstretched completely. I did this naturally when I was younger (still do) until I discovered that it's the 'wrong' way to do it, since most people cant.
I can wiggle my ears, cross one eye (and not the other, or both if I want), roll my tongue, clap with one hand. Oh yeah, I found middle school to be completely boring.
I also memorized pi to 41 digits in early high school because I felt like it
(3.1415926535897932384626433832795028841971)
I also did a crappy version of the whole 'speedcubing' thing in highschool. I got a little under a minute as my best time.
Nothing spectacular, nothing that hasn't been done before, but all of it still weird.
EDIT: oh, yeah, and the guy/lady who can "touch" his/her toes: I can move my pinky toes willingly so they are above (on top of) the next toe, and back down again. One of my ex-girlfriends saw me do this once (I was doing it without realizing it), and sort of freaked out. So I guess that's weird, too.