An insult in which you tell someone to brush their teeth while making a masturbation gesture toward your mouth, simulating oral sex and teeth brushing at once.
The practice of using semen to brush one’s teeth instead of the traditional toothpaste.
Husband to wife after work: It’s been a long day at the office darling darling, and I know it’s that time of the month, so I hope you’re ready to brush your teeth with the kids!