forepay
Advanced payment. The action of paying somewhat an amount smaller than the actual payment. Not to be confused with foreplay.
Friend 1: Hey I don't have all the money I owe you right now but I'll just give you 20 dollars for now.
You: Okay thanks
20 minutes later
Friend 2: Hey where've you been?
You: I just got a whole bunch of forepay right now from that girl over there.
Friend 2: FUUUUUUUUUUUU!!!
You: Okay thanks
20 minutes later
Friend 2: Hey where've you been?
You: I just got a whole bunch of forepay right now from that girl over there.
Friend 2: FUUUUUUUUUUUU!!!