Prem juice 

The man juice that seaps out of an asshole after another ejaculates into an asshole.

"Dude, did you save our prem juice?"
- "Yeah! I'm saving it for my toast in the morning!"

Prem juice by beckyiscoooool October 20, 2010

prejuice 

clear fluid that comes out of the dick during erection; oozes out to lube up the dick and pussy before sex

Also precum

When she started to blow me, she got a little taste of prejuice.

prejuice by PreJuice April 18, 2005