Examples:Anime and Manga
- One episode of The Melancholy of Haruhi Suzumiya begins with Kyon and his sister doing this.
- In Strawberry Marshmallow, a flashback shows 6-year-old Miu popping over to the Ito house to leave her wet undies and bedsheets and comes in on 10-year-old Nobue and her 6-or-7-year-old sister Chika brushing their teeth. It is cute, but that's not surprising.
- This is part of the Training Montage in which Shinji and Asuka learn how to move in synch for a Monster of the Week in Neon Genesis Evangelion. Ends in a mutual Death Glare when they get in each other's way.
- All three Paper Sisters do this in Read or Die. They think its cute, Nenene thinks its just creepy.
- One of the openings for One Piece had the entire crew doing brushing their teeth together on a hillside.
- Madoka and her mother in the first episode.
- Torrance Shipman and Cliff Pantone in the movie Bring It On.
- Doug and Steve in A Night at the Roxbury.
- Seen in Frasier. Martin and Daphne are completely thrown out of synch when she hands him a blue cereal bowl instead of his usual yellow one.
- Lorelai and Rory in Gilmore Girls have their routine.
- Morecambe and Wise's breakfast routine, set to the tune "The Stripper".
- The title sequence for Liv and Maddie shows the family taking it in turns to get in front of the bathroom washbasin (with them filmed from the POV of a vanity mirror over the basin).
- Kelly and Julian did this in a recent The Wotch.