Define Nasty Sex Meaning

Nasty Sex
When two people have sex and have a ugly redhead fuck her like J Beck

Beck was conceived during dirt nasty sex
By Ynes
Nasty Bum Sex

"farquar came over last night, we had a nice bottle of red wine, a few joints and nasty bum sex."
By Robinia
Dirty Nasty Trick Sex
Sex so dirty and nasty that anything goes, and when its all said and done you feel like a used trick.

girl 1: How'd your date go last night?
girl 2: too good, we had dirty nasty trick sex.
girl 1: So you're too embarassed to see him again?
girl 2: Hell no, hes coming back over tonight.
By Eddy