whup /wʌp/ (
also whop)
 verb (
past tense and past participle whupped, 
present participle whupping)
 [transitive] informal especially American English[
Date: 1800-1900; 
Origin: whip]
1.  to defeat someone easily in a sport or fight: 
 I’m gonna whup your ass  (=defeat you very easily).2.
 I’m gonna whup your ass  (=defeat you very easily).2.  to hit someone and hurt them very badly, especially using something such as a belt 
 [TahlilGaran] Dictionary of Contemporary English ▲