Wanksandwich 

When two females are 69ing (licking each other out at the same time) each other and a male ejaculates in between them.

"I'm well going to wanksandwich those lesbos" Horney Fat Guy

Wanksandwich by Cockmaster69 June 5, 2009

Wank Sandwich 

When you have Bloc Party playing in one ear and The Kooks in the other.

"Fucks sake! I'm caught in a Wank Sandwich here!"

Wank Sandwich by John in Fleet February 18, 2009