Baby farts
"Why did you throw that glass away?"
"The water was stale. Don't taunt me, that's perfectly in line with my ethical standards on polluted African water."
"Did you put that glass in the sink because a 3 year old farted two feet below and three feet away?"
"Well..."
"And you just brushed your teeth with that toothbrush?"
"Yeah, so?"
"It was in your bag, in the room, half a foot below and three feet away in the opposite direction."
"It was covered."
"It was in a plastic box which you left the top off of, in the front pocket of your bookbag which you left unzipped and wide open."
"The brush end was on the bottom of the plastic box."
"You just brushed your teeth with baby farts."
"The sanitary chemicals within the toothpaste balanced it out."
"Okay, so you're teeth are now half baby-farted on."