donkey punchのようなどんな単語でも探してください。
 
1.
A perjorative term for someone so ugly, so exceedingly unattractive. that he or she is as "ugly as a butt" (a misnomer, since many buttocks are beautiful indeed). A popular teen-age slang term since the 80s, "butt-ugly" most probably began as military slang c. World War II. Probably because enlisted men found nothing attractive about another enlisted man's hairy, sweaty, very possibly pimpled butt!
That dude is so butt-ugly that just the sight of him makes me wanna puke!
Victor Felixによって 2005年08月21日(日)
 
2.
very ugly
(from butt=very)
This room is butt ugly.
Light Jokerによって 2004年03月21日(日)
 
3.
As ugly as buttocks. Mostly like large, hairy and deformed buttocks.

(Not Jennifer Lopez's buttocks)
That bitch is butt ugly
Funky Big Geek Freak Booty Daddyによって 2003年03月10日(月)
 
4.
Exceedingly ugly. Originated by GIs in WWII, this term is as fresh as ever.
He came in butt ugly after a night of hard partying
Bill Petersによって 2006年11月09日(木)
 
5.
A condition of being extremely ugly.
That dog is butt-ugly.
Duckbuttによって 2006年05月26日(金)
 
6.
A person or object deemed so ugly (unattractive physically) they had to add butt in front of it.
Damn, did u see that girl Ashleigh? She is butt ugly!!
DubbinMau5によって 2010年09月09日(木)