To stop brushing your teeth in the 6 months in between dentist appointments right up until your next check-up, just to see what your dentist says.
Guy 1: Dude, Mike's breath smells like shit
Guy 2: Yea dude, he's 4 months in to his 6 month challenge
Guy 1: Oh that explains it, tell him good luck for me
9👍 9👎