(vulgar) Something or someone that causes discomfort or frustration.

(slang, vulgar) Rough, aggressive; powerful and successful. / (slang, vulgar) Excellent, first-class.

A beating, sometimes prearranged. / A brutal and decisive defeat of an individual or group of people by another who had thoroughly dominated them in doing so, such as in sports.

bare-bottomed / (informal, by extension) naked, starkers / (informal, by extension) blatant, unashamed

(colloquial) Oriented backwards, particularly after a mishap. / (idiomatic, colloquial) Hopelessly misguided; contrary to what is normal, expected, or logical; having taken the utterly wrong choice.

(colloquial) Moving backwards, that is, rear end first. / (idiomatic, colloquial) In a hopelessly misguided manner; in a manner contrary to what is normal, expected, or logical.

present participle of kick ass

(vulgar, slang) Tough, uncompromising and inflexible.

(vulgar, slang) A tough and combative person.

(vulgar, slang, derogatory) A rotund, overweight, or obese person. / (derogatory) A jibe used on someone disliked, frequently someone regarded as lazy.