b.o.b.-a-thon
a girl takes a bath, then goes on a long, dirty, and very loud sex party with her favorite toy.
My sister’s b. o. b.-a-thon started with a bath and ended with her screaming at the ceiling.
My friend had a b. o. b.-a-thon so intense, her roommate came in and asked if she was dying.
My cousin’s b. o. b.-a-thon was so loud, the neighbors started throwing eggs at her window.