What new thing did you most recently learn? I learned that it's offensive in continental Europe to not look into someone's eyes as you toast them. I was told this by a hot 30 year old Czech dude on a gay night.
That might be a lie then I learned that when you're in california visiting friends, bring sweet clothes.
Hm, I learned how to compute the inverse of block matrices. Split up the big matrix into blocks then take the inverse (1/(ad-bc))[(d -b)/(-c a)] for each subsection. Um, not fun.
I learned how to play Tetris on my graphing calculator! Now, I can peacefully go to my AG/Calc class without falling asleep!