whoop-ass

Verb

whoop ass (third-person singular simple present whoops ass, present participle whooping ass, simple past and past participle whooped ass)

1. (US, idiomatic, slang, vulgar) To beat or strike.
   • Back in the day, he turned over some tables when he found out thieves were in God's temple and that's what we're doing now, turning over some tables 'cause we found a violator of the law, and we shall whoop ass and teach him...2015, Rhonda Cannon Jones, In the Secret Place of Brooklyn Stone, Volume 1, Publishamerica, →ISBN
2. (US, idiomatic, slang, vulgar) To defeat in a fight.
   • I said "Hello Papa," and he said, "Well, I'll be darned, I'm gonna get off of this piano and whoop yo' ass."1992 August, “Blues brethren”, in SPIN, volume 8, number 5, SPIN Media, →ISSN, page 55
3. (US, idiomatic, slang, vulgar) To defeat or excel against (someone) in a competitive event.
   • Intel knew the K6-III 450 with its 256k built-in cache would whoop ass on the Pentium II series.1999 August, Kevin S., “Intel bounces back”, in Maximum PC, volume 4, number 8, Future US, →ISSN, page 18