Toothbrushes

I was getting the kids toothbrushes ready tonight and I saw 2 nearly identical toothbrushes for my son. One was light blue and the other was dark blue & I couldn't remember which was the latest. When I went out to the kitchen and asked him which was the right one my son shrugged but my daughter answered, very matter-of-factly "It's the light blue one." Then, after a pause, in the same tone (but with the very slightest hint of a grin) she added "the dark blue one has throw-up on it."

Turns out my poor, mortified, son has been using the dark blue one for a while. When he finally got done shrieking, she (mercifully) explained that it wasn't on the bristles.