FPM

A males Faps Per Minute. FPM can be measured with a metronome or weird friend counting. FPM may also be known as SPM or strokes per minute. FPM can range from 50 or 'practicing lasting longer' to 100 or 'quickie behind dustbin between shifts working at McDonald's'.
If you don't know what a metronome is you're a uncultured fag.

'Jonnys working on his FPM right now'
'New girlfriend?'
'Yeah'

by FPM is the future October 22, 2013