If, while eating a long john, the filling shoots out the end, the long john becomes a schlong john. Can also be used for particularly long and skinny and/or phallic long johns.
Whoa! Watch where you point that schlong john.
by SamAdams February 1, 2005
A person named John that has a particularly long schlong
Guy 1 : Hey bro did you see John yesterday?
Guy 2 : Ohhh, Long Schlong John, ya his Schlong is huge!!
by John McMenda July 28, 2020
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!
by Dr. Evil 518 September 14, 2010