1 definition by Salty n Sticky
The act of ramming a thumb up a female's anus while she is receiving oral sex. It is usually performed at the point of climax to intensify the "shock" and therefore "pleasure" associated with the climax.
Dude, while going down on my girlfriend last light, I gave her a Mongolian Spike just before she came. I thought she was going to loose her mind! She even spoke in tongues!
by Salty n Sticky December 8, 2009