Mama's Super Bowl Spoon

Listen up, you uncultured swine. You clearly don't understand humor, so here's the deal. You are the type of person who probably thinks a spoon is a universal utensil for everything. But see, the Super Bowl is a big American football game where people generally eat things you would use your hands or a fork for, like burgers and fries. Bringing a spoon is dumb, which makes your mama dumb in this scenario. The joke relies on the absurdity of that situation and the implication that she's not smart. It's meant to be a light insult, not rocket science.