1) Noun- used as a replacement for the word "condom." In doing this one can secretly suggest he needs or has condoms.
2) Verb- When one says they're "making" balloon animals, it means they are having or going to have sex. This is done to secretly suggest that one is having, going to, or had sex.
1) as a girl is sitting on his lap, a guy turns to his friend and asks; "bro, im definatly gunna need some balloon animals tonight...can you lend me some?" (Girl remains oblivious)
2) Guy asks his friend (in front of his parents), "What did you do last night?" Second Guy: "Ahh nothin, the girlfriend came over and i made some balloon animals. Even one time in the shower." (parents remain oblivious)