What's the similarity between a 14-year-old girl and the fetus inside her?
They're both thinking, "Oh fuck, mom is gonna kill me!"
Fetus Fears
Explanation
Explain Bear
Alright listen up, chucklehead! So, you got this teenage girl, right? She's knocked up. The joke is both she AND the fetus are worried that mom's gonna lose it when she finds out. Geddit? It's funny 'cause teenage pregnancy is frowned upon by the olds. And you, probably being a mouth breather, are probably gonna be in the same situation soon.