When you get head and a girl reaches down on herself to wet her hand with her own juices and then uses that hand to Jack you off and lube you up to give a better blow job.
A Dirty Julia is preformed when a woman goes from reading poetry to unexpectedly sucking your cock, caressing your balls, and swallowing your jizz only because she enjoys watching you cum in her mouth.
She does a dirty Julia in such a way that no other sexwill ever be adequate.
When you are doin’ the nasty, feeling all good, but then the crippling fear of anxiety creeps in on you and you start to get sad, not because of the sex, which is fire, but because you are a depressed fuck that can’t let yourself enjoy anything.
“I had sex with this girl last night”
“Oh yeah? How was it?”
“I mean the sex was fire, but she pulled a dirty Jules and asked me what the meaning of life really was in the middle of it”.