2
When a person sticks their foot into the rectum of a different gender and wears that person as a boot.
I did a good Mountain Climbing on Stephen last night.

Becky begged me to Mountain Climb her so I had to.
by Jackk Mihoff August 28, 2011
Get the mug
Get a Mountain Climbing mug for your mom Sarah.
3
(in video games)The act of driving up a steep hill to kill the guy on top or other side of that hill.
In that battle there was some serious mountain climbing going on.
by Greevil August 23, 2006
Get the mug
Get a mountain climbing mug for your mother-in-law Jovana.