[CISS]

Imagine you have been dared/ordered to become your b/f's/master's/friend's/some other person's cum bucket. I.e. you're expected to receive and retain the cum load.
If you were given the choice where the cum goes, what would you choose?

(1) Mouth; that means you'll swallow
(2) Ass (that means you'll take the cock up there in the first place),
(3) [for girls only, obviously] vagina (also with insertion).

Explain your choice.

CISS