Salty raisins
When a person's "raisins" become quite shriveled and "salty" like when in a "nutted" bag of trial mix due to pent up aggression or sexual tension.
Becki: Oh my gosh Lexi were you with Joe last night?
Lexi: oh my god yeah he had really salty raisins!
Lexi: oh my god yeah he had really salty raisins!