blow (one's) load

1. To lose or spend all of one's money. My Las Vegas trip was short-lived—I blew my load at the poker table in the first two hours! Here's $20 for the weekend, don't blow your whole load tonight. Why is it that so many lottery winners blow their load and end up penniless?

2. vulgar slang Of a man, to ejaculate semen during an orgasm. I was mortified, but at least my girlfriend was nice about it: "It's not a big deal—plenty of men blow their load, uh, ahead of schedule."

3. To lose control of one's composure, temper, patience, or nerve in a given situation. Usually used in the negative. Don't blow your load, we'll get there soon. The game is in 30 minutes. I know you're nervous, but stay sharp, don't blow your load now. A: "Don't blow your load and become a stammering fool in the interview, OK?" B: "Gee, thanks for the words of encouragement."