Sneakthief 

When you a sleep with a girl, wait till she falls asleep, then steal her money and cum in her purse.

Guy 1: "Remember that fat chick I went home with the other night?"
Guy 2: "Yea"
Guy 1: "You'll be happy to know I sneakthiefed her. Now we can pay the rent."

Sneakthief by Sneakthiefer May 2, 2009

Sneak-Thief 

A sneak-thief is any type of stealthy, ninjaesque, tricksy, pickpockety character in Skyrim. Hold Guards spend much of their time talking down to sneak-thieves.

"Hands to yourself, sneak-thief."

Sneak-Thief by Aghabajab April 4, 2012