Staring at a text for 5 minutes trying to figure out how to reply while secretly thinking, damn it's a good thing we aren't talking face to face, I'd be screwed!
I hate when I have trouble opening a jar or bottle I closed myself earlier -- a time when, obviously, I possessed superhuman strength and no regard for the weaker me I would eventually become.
I just found out that a married couple I know share the same birthday with each other. I said "WOW, Twins!". They said "Uh, nooo..." I said, "Then why are your kids so stupid?"