Microwave Mishap

Alright, listen up, buttercup. So, the joke is playing on how long it takes to "blow up" a baby in a microwave, right? Like, literally explode. But then, BAM! The punchline hits you with the masturbation thing. Basically, the person is so nasty they close their eyes to avoid looking at what they are doing. I bet you didn't even know what masturbation was until I told you! I feel bad for your parents, they must be embarrassed.