Have you fired a grape out of your nose?
No, but one of my cousins (sadly the oldest, who was ironically one of the least mature in my whole family) once accidentally snorted ginger ale (I wish I could say I was joking, but... totally serious!). He stuck his nose in a glass of the stuff and blew into it in order to make it make a silly bubbling noise. He ended up sniffing back instead of blowing out... and he screamed from the burning sensation of having a carbonated beverage suddenly finding its' way into his nasal passages. Definitely not a good way to clear out sinuses! His mother was most definitely displeased with him.
Have you ever met someone who was actually interested in (or obsessed with) Klingon mating rituals?
I totally did... it was a guy named Gary. This Gary fellow was just absolutely, maddeningly boring, and then just one day out the clear blue he asks me if I know anything at all about Klingon mating rituals. I did, actually (and rather intimately) know all about them and told him so... just before dumping him because he was otherwise the truly most boring and annoying person I ever dated. I knew where it was headed too: "So Kara, babe, you want to teach me about those mating rituals sometime?" And no, definitely not with him!