when having sex, you pull out of the dog, cum in its bowl and mix in some kibble. Mix it with your dick and share it with your dog...while singing "when the saints go marching in"
When your girlfriend throws all your shit in the street so you fuck her in the ass wicked hard and then slap her in the face with your shit stained dick.
Did ya hear? Mickey and Rhonda's split up after they had a Dirty Boston last night!
When 2 people are having anal sex and the giver takes out their cock after ejaculating into the receivers anus. Then the receiver defecates onto the givers penis, then forms the shit around the base of the penis but not the tip which creates the Dirty Boswell
John told Sara “they should try something new “ so they did the Dirty Boswell