The three husbands stayed in one tent and the three wives stayed in the other.
At about 3 in the morning, Bob woke up and yelled, “Wow, unbelievable!”. Bill woke up and asked, “What’s going on?”
Bob said, “I’ve got to go to the other tent and find my wife.”
“To have sex! I just woke up with the biggest erection I’ve ever had in my life!”
After a pause, Bill said, “Do you want me to come with you?”
“Hell, no! Why would I want you to do that?”
“Because that’s my dick you’re holding.”