Me and my friend love Freemans Mind, so my buddy was like "Do it for Bioshock, Do Freemans Mind for Bioshock!"
So I went along, we giggled a bit here and there, but nothing to hilarious. Then I reached the part when you pick up the Tonic in the Doctors office, and a Splicer comes up behind you to scare you and such.
So I run in, and say "Wooooo! Tonic!"
Then I turn around and Scream like a little girl because I forgot about that part.
Me and my friend stopped playing Bioshock, but kept laughing about it for the whole night.