From sponge + -worthy. Coined in "The Sponge", an episode of Seinfeld that first aired in December 1995, to indicate a man who is worth using one of a limited supply of contraceptive sponges on.
spongeworthy (comparative more spongeworthy, superlative most spongeworthy)
- (humorous) Highly sexually desirable.
1995 December 7, “work=The Sponge”, in Seinfeld:
ELAINE: So, you think you're spongeworthy? BILLY: Yes, I think I'm spongeworthy. I think I'm very spongeworthy.
2002, December 15, Readers trash skanky Barbie, page Q8:
The ultimate question: Is Ken "spongeworthy"?
2005, Donna Barstow, Love Me or Go To Hell, →ISBN, page 73:
I don't know if he's spongeworthy yet, but I do heart him!