b.o.b.-a-thon
a girl soaks in a bath, then spends hours using a toy to make herself cum so much she might pass out.
My cousin’s b. o. b.-a-thon started at 8 PM and ended at 1 AM. She barely moved the whole time.
My friend had a b. o. b.-a-thon in her bathtub. The water turned pink from all the cum.
My neighbor’s b. o. b.-a-thon was so loud, the dog ran away.