When couples engage in sexual intercourse for extended periods of time without washing or cleaning off genitalia from bodily fluids, such as sweat, lube, and/or ejaculate.
The art of practicing intercourse while talking about items that are generally not clean or sanitary as a form of foreplay or climax stimulation. We discovered that the port-a-potty was our Dirty Sex fastest climax, we've been using it for years, it never gets old.
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.
