Lock-up
The act of holding a dick in ones mouth while the person sits on their shoulders. By sitting on the others shoulders and inserting their dick in the others mouth, it forms a "lock" between the two people for stability or other needed reasons.
I couldn't reach the jar on the top shelf so my girlfriend let me sit on her shoulders, then she let me lock-up so I didn't fall.
Lock-up by Geoffy Geoff September 24, 2011
Get the Lock-up mug.