A Green Day album with amazing songs such as Dominated Love Slave by Tre Cool and Christie Road. The reason the name was given is because Kerplunk is the sound a dookie makes when it lands in the toilet.
Kerplunk! 💩
this is when a guy is taking a piss while getting a rim job. as opposed to a plumpkin which is a BJ whilst taking a shit.
bob was peeing in the woods when susan came right up behind him & began eating his hairy ass out, aka a kerplunk.
When your well endowed and it hits the toilet water.
When I was taking a crap and yup "Kerplunk".