Slippery Tiernan
When you "accidentally" slip an object (usually a laser gun) between somebodies two butt cheeks.
Guy- "WTF, you just gave me a slippery Tiernan!"
Other Guy- "Sorry, it was an accident."
Guy- "Hehe. I just gave you a Slippery Tiernan."
Loose Girl- "Really? I didn't even notice."
Other Guy- "Sorry, it was an accident."
Guy- "Hehe. I just gave you a Slippery Tiernan."
Loose Girl- "Really? I didn't even notice."