A guy goes to the pharmacist and says: "Listen, these two girls are coming over this weekend, and they are hot, very hot. Would you have something to get me going all night? It's going to be a hell of a party." The pharmacist goes in the back room, comes back with an old dusty bottle and tells him: "This stuff is potent: drink only one ounce of it, and I guarantee that you will be doing the wild thing all night. Let me know how it goes."
The weekend goes by and on Monday morning the pharmacist finds the same guy waiting for him outside the store. The pharmacist asks: "What are you doing here so early? And how was your weekend?" The guy replies: "Quick, I need Ben-Gay for the pain." The pharmacist, knowing what the guy had been doing all weekend, says: "Are you crazy, you can't put Ben-Gay down there. The skin is way too sensitive." The guy says: "No, no, It's not for that, it's for my arm." The pharmacist asks": "What?? What happened?" Guy replies, "Well...I drank the whole bottle of your potion." The pharmacist: "Oh my god, and then what?"
A guy goes to the supermarket and notices an attractive woman waving at him. She says hello. He’s rather taken aback because he can’t place where he knows her from. So he says, "Do you know me?" To which she replies, "I think you’re the father of one of my kids."
Now his mind travels back to the only time he had ever been unfaithful to his wife and he says, "My God, are you the stripper from my bachelor party that I made love to on the pool table with all my buddies watching while your partner whipped my butt with wet celery?"
She looks into his eyes and says calmly, "No, I’m your son’s teacher."