Two guys are sitting on a bar stool. One starts to insult the other one. He screams, "I slept with your mother!"
Three sons left home, went out on their own and prospered. Getting back together, they discussed the gifts they were able to give their elderly Mother.
A little boy was doing his math homework. He said to himself, "Two plus five, that son of a bitch is seven. Three plus six, that son of a bitch is nine."
A mother-in-law stopped unexpectedly by her son's house after he was recently married. She rang the doorbell and stepped into the house to see her daughter-in-law standing naked by the door.
A little boy walks into his parents' room to see his mom on top of his dad bouncing up and down. The mom sees her son and quickly dismounts, worried about what her son has seen.