What is Grundleslap?
1.
A guy makes his pants tight so that the area above his dick if firm (usually by sitting down, you know what i mean) and then slaps it with his hand, in what would seem to be painful but is completely not.
I grundleslapped you mom last night
See
Random Words:
1.
from Old English, meaning to killeth in thy faceth. Loosely translated it means one has gotten incredibly fucked up
Ooh man I just kil..