"Choice of Lubricants" joke

Bubba's old lady had been pregnant for some time, and now the time had come. He brought her to the doctor, and the doctor began to deliver the baby. She had a little boy, and the doctor looked over at Bubba and said, "Hey, Bubba! You just had you a son!"

Bubba got excited by this, but just then the doctor spoke up and said, "Hold on, son! We ain't finished yet!" The doctor then delivered a little girl. He said, "Hey, Bubba! Hey, you got you a daughter!"

Bubba got kind of puzzled by this, and then the doctor says, "Hold on, we still ain't finished!" The doctor then delivered another boy and said, "Bubba, you just had another boy! But don't worry,' cause that's it!"

So, Bubba and his wife went home with the three children. When they got home, they sat down and began talking. Bubba said, "Mama, you remember that night that we ran out of K-Y and we had to use that 3-in-1 Oil?"

She said, "Yeah, I do."

Bubba said, "Man, it's a good thing we didn't use no WD-40!