Yaoi logic is using your tongue instead of the hand cream you probably have lying around.

In their defense I don’t have any hand cream laying around

Yaoi logic is the fact that the inside of his ass is going to be squeaky clean with no prep

The hand cream is just an example, most people tend to have some basic ass moisturiser anyway. Though to be honest, squeaky clean ass with no prep definitely has stronger yaoi logic.

i imagine (hope) he washed it he knew they were gonna be having sex from the start it’d be weird if he didnt clean it