Your housemate has strict rules. No jerking off in this house. Especially because your penis is so small, it does not deserve to be pleasured. He catches you jerking off and immediately start humiliating you. He gets out some lube and fingers your asshole. This is the only way you were allowed to get off. Instruction on how to sniff, the sniffing will allow your arsehole to open up, so he can fit more fingers in it. Only alpha males I came I allowed to jerk off their big dick.