Replying to Sluts and their gross conversations

I just currently overheard these two fifteen year old girls talk about the most disgusting shit. One was talking about how she thinks shes pregnant and how happy she'll be when she sees red. The other was talking about how her mom bought the wrong condoms and how her 19yo boyfriend pulled out and the condom was just on the tip of his schlong, just ripped. We're in a room of about 40 people and I guess they just don't give a shit about who hears them. What are some gross things you've heard sluts talk about?