knock one off
1. Make love to yourself
2. A bout of self help
3. To masterbate
4. Pull the popes cap off
2. A bout of self help
3. To masterbate
4. Pull the popes cap off
Dont go to the shop yet sugar, I just need to quickly knock one off.
knock one off
To have sex or at least reach orgasm in a restricted amount of time.
When I wake up in the morning the gf and me knock one off before I go to work.