let 'er rip 

to fart with confidence

C'mon, boy, you ain't got nothin'a hide; you're in a man's house--let 'er rip!

let 'er rip by H0m3skyllet April 6, 2009

pinch the tip, then let 'er rip 

Right before a man is about to ejaculate, he (or someone else) pinches the tip of his penis to stop the flow of the goods. Pressure builds, and right before his eyes are about to pop out he (or someone else) releases the shot which now has an extremely extended range of distance.

Jon: Dude, Jake! What the fuck is that hanging down from your ceiling above your bed?!

Jake: Awww shit, forget to clean up last night after trying to make some knuckle babies.

Jon: How the fuck did you get it up there?!

Jake: That's easy DUDE! Just pinch the tip, then let 'er rip!

pinch the tip, then let 'er rip by BigJuan55 October 16, 2014