Responses
It's sort of like what happens to dogs, i think. The base of the male genitalia become engorged and is lodged, in a seal proof way. Sealing the exit as they cum inside increasing the possibility of insemination. Happens to male humans as well, that's why you shouldn't alway trust their "pull out game" ╮( ̄▽ ̄)╭
Please help a poor soul. What's knotting? I just know it can make you pregnant? Judging from the comments