A lawyer who works in Texas receives news of an out of town emergency which requires him to fly out of the state for a short period of time. He doesn't even have time to pack, so he calls home to tell his wife he is going.
The maid answers the phone but is hesitant to put his wife on the phone. After quite a bit of cajoling, she admits that his wife is in the living room kissing the mailman!
Now the man is furious, and would rush right home, but of course there is this emergency to take care of, so he tells the maid to go get the gun from his desk drawer, and kill both his wife and the mailman.
She protests, but he explains that under Texas law it is legal to kill your adulterous wife and her lover. Using his silver tongue, he finally convinces her to do it. She puts down the phone, and the lawyer can hear the sound of two gun shots, the screams, some loud bumps, and, finally, some splashes. The maid comes back on the phone.
The lawyer asks "did you kill them?".
"Yes!", she replies.
"What did you do with the bodies?"
"I threw them in the pool."
(A Long Pause)
"Pool? ... Say, is this 555-8234?"