A magnum hard on is when you look into the eyes of a man laying alseep on the floor and get a massive erection and it pokes said man or woman and wakes them
Tanner: “oh yeah you look so sexy sleeping”
Titan: “what’s poking me?”
Titan: “yucky tanner get your magnum hard on away from me”
by Lookatmetantan October 8, 2023
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