Unpleasant, grimy, unhygeinic, generally undesirable. Can be used as a verb or an adjective.
You spunk swallowing shagnasty fuckpig.
A man of low standards in reguards to sexual partners. A true Shagnasty will quite happily have sex with someone he finds physically repulsive. A shagnasty never admits to sleeping with ugly girls and to most people may seem completly celabet.
"you hear about john?"
"He got caught at the old peoples home trying to organise a geriactric orgy."
"lol, that guy's a shagnasty"
Usually used as a proper noun (someone's name) to show disdain, contempt. Also used in jest on acquaintances.
Hey Shagnasty! Get us a beer in, will you?
You shut yer fuckin' trap, Shagnasty!
Word used to describe individual or object that exudes excessive sexual prowess. Can also describe dance move, item of clothing, group of people etc.
"Those Radpad Girls are so shagnasty"
"Giiiirl those thigh-highs are shag-nasty"
Verb used to describe a person who does especially kinky or dirty sexual acts.
Yes, I do believe he is the kind of person that would shag nasty.
Someone or something that's so mean that they will fight or act with merciless intent to get want they want or accomplish.
Did see Alan in that fight? Yeah, I don't want to mess with him because he's freaking shag nasty when he gets in a scuffle.
A ball of dried shit tangled up in your ass hairs. Similar to dingleberry but a little nastier to say.
I would've ass-fucked her, but I saw a shagnasty and flipped her over instead.