Slipped the goose

"Slip the goose" means almost anything depending on context. It is the perfect expression because it invokes a strong visual, and yet it's vague enough that it resonates in a wide variety of situations with various meanings. Depending on how you say it and with what other combinations of words the meaning can mean someone did awesome, someone did badly, someone messed up, someone got confused, someone did something really tiring, or someone blew off work or other obligations, or even someone avoided a problem or tragedy.

Good - Hell yeah, man! You slipped the goose big time! Oh dang, you're lucky you slipped the goose.

Bad - Damn, you really slipped the goose. I don't know man, I slipped the goose earlier and not feeling it. The hell man, you slipped the Goose

Dripping Sister

When a Mormon couple doesn’t want to go too far, but takes a shower together in their garments and touch each other. What the world calls heavy petting.

Babe, I don’t want to go to far and talk to Bishop, I’ll go get the shower hot, so we can do a dripping sister.