Bottom hombre (Noun; adj). Deriving from the word 'hombre', commonly pertaining to 'dude' or 'man'.
Adding 'bottom' as a prefix to hombre implies that the person is quite an unsavoury or malicious character - the lowest of the low.
"I was out with Barry and the Heath Park Dongers the other night - they were playing this very queer game called balltig --- I tell you, Terry, those guys are serious bottom hombres."
"I was roller-blading through the park the other day when I caught a guy exposing himself to a tramp - what a bottom hombre. Good job that tramp's blind."
"My mate, Mick, is a serious social retard. I know he's balding, but if he wasn't such a bottom hombre when he's drunk, he would surely be able to get a girl to fidget with his manhood."
When someone is a private pervert, wayy further than down bad, you can call them "Down horrible" meaning someone is just one of the most desperate, horny, etc. To the point where they tryna hit on 3 year olds.
Edp: "Hey there little boy- (Proceeds to nut on him)
Witness: "I'm calling the cops, you're fuckingbottom horrible!