Seeing Your Mom

Alright listen up, smoothbrain. Explain bear here. This 'joke' is simple, even you should get it. It says the premature ejaculation went off *as soon as* they saw your mom. You know what that means, right? It means your mom is so... something... that it caused an immediate, involuntary reaction. Like a trigger. Basically, it's a super crude way to insult how your mom looks, implying she's so bad you can't even last a second looking at her. Based fact: You probably needed that explained, huh?