Things that you hear other people say as you walk past them that really make you want to eavesdrop further and find out what the heck they are talking about only they are going in the opposite direction, so you can't exactly turn around and follow after them to hear the rest of the story, #3

"She's not my ladyfriend - I'm just helping her to conceive"

[This one heard in a pizza place in Greenwich Village, so it's not inconceivable, if you'll pardon the non-pun, that it was said in total genuineness - I mean genuity - um - for real. Unfortunately I didn't catch the rest of the conversation].