same as a dirty sanchez except, instead of sticking your finger in her ass, you stick it in your ass to catch her offguard therefore, making it a sneak attack.
My girlfriend hates it when i give her a dirty sanchez so, i hit her with the sneak attack.
by thenek July 14, 2004
it is when you and your partner are having anal sex, when upon climaxing, your partner sticks his finger in his own ass and wipes it on your upper lip while your climaxing, therefore "sneaky".
by iamgay March 23, 2005