shoot (one's) wad
1. slang To lose or spend all of one's money. My Las Vegas trip was short lived—I shot my wad at the poker table in the first two hours! Here's $20 for the weekend, don't shoot your whole wad tonight.
2. vulgar slang Of a male, to ejaculate semen during an orgasm.
shoot one’s wad
tv. to spend or use everything. I can’t afford a cab. I shot my wad at the restaurant.