The opposite of hip with the kids. Someone might be shoulder with the kids if they're considered behind the times, uncool, lame-o, or droll. They also might be shoulder with the kids if they know what "droll" means without looking it up.
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!