A fictional character with little to no personality, substance or narrative relevance besides glossing over a character, usually a protagonist, and concieving, carrying, and giving birth to their child.
A female cum bucket character can also be referred to as "walking womb".
Random guy 1: "Dude, Cha Hae-In from Solo Leveling is such a cum bucketcharacter."
Being fucking in the ass while being drowned in a confined space. The confined space could including anything from buckets, bathtubs, or toilets. The liquid could be of any sort also, from tea to water.
Sam and I tried fish in a bucket, the toilet was most likely not the best place for it.
Where all the kewl kidshang at the KKK (Kewl Kids Klub)
Daddy Dave, the cunt: Are you coming out tonight?
Sexy Steve: Yeah, I'll meet you at the local mop bucket sweetheart Dave McGurdeyson ;)
Daddy Dave, the cunt: Ohayeeeeee see ya there baby
Both: White power, the cunt.