poontangoed

The action of closing your legs on a partner's head unannounced as they perform cunnilungus on you.

This is in reference to the popular drink Tango and the subsequent "You've been Tangoed" ad campaign, which involved slapping someone on either side of the head.

Guy 1: I was eating this chick out last night and thought I was doing a good job, until she slammed her legs closed on my head.
Guy 2: You got poontangoed, mate!