An unfortunate condition that may befall one's schlong, whereby said penis has been inserted into a "not so fresh" vagina, particularly one with a fishy odor. The result is a schlong that, when removed post-coitus, smells of seafood.
My girlfriend and I boned after playing tennis and I got the worst Schlong John Silver!
ayon kay Dr. Evil 518 ika-13 ng Setyembre, 2010