When a person surreptitiously gives their sexual partner a dirty sanchez by giving himself a dirty sanchez in secret and then kissing their unknowing partner thus applying the sneaky sanchez to their upper lip without them knowing.
Kyle smeared poo across his upper lip before his wife came home from work. Giving her a big kiss as she came through the door he applied the sneaky sanchez.
by dw6245 January 23, 2009