You know, I have a friend who works at the crime lab at the police station. I could give him your toothbrush and he could run a test on it to see if you actually brushed your teeth or just ran your toothbrush under the faucet.
13 seconds sound clip from the Uncle Buck (1989) movie soundboard.
You can hear this line at 00:33:07 in the Blu-ray version of the movie.
