rain on your balcony

-Ruin someone's plans.
-be the damp squib
-burst someone's bubble

Sorry to rain on your balcony, but I'm going to skip the movie.

nazi nipple

-Nipples that are perpetually erect.

-Nipples that look like they are perpetually aroused

It's not the cold, just Nazi Nipples.

Volunchoose

choose someone to volunteer, sort of like nominate... but without choice or consent.

I'm unavailable on the day of the party, I volunchoose Bret to join the 'clean up after everyone has left the party' team.