A smutbucket is a very special kind of female, she is not the average trashy girl or loose woman you usually see at the bars or clubs. This female is the nastiest of the nasty and the dirtiest of the dirty, if you see a woman that you feel is super ultra mega trashy and skeezy this is a smutbucket.
Dude last night i had sex with this girl in a hotel bathroom, and after i was finished she walked out cleaned herself up and instantly proceeded to give my best friend a blowjob. She is a smutbucket and a half.
Derived from smut meaning a person who enjoys lewd behaviour or making dirty jokes at every opportunity. Smutbucket can be used to describe males and females.
That John McKenzie can make a rude joke out of anything, he's such a smutbucket!