The one about the baby Texan...

A Texan buys a round of drinks for all in the bar because, he announces, his wife has just produced "a typical Texas" baby boy weighing 25 pounds. Congratulations showered him from all around, and many exclamations of "WOW!" were heard. One woman faints due to sympathy pains.

Two weeks later, he returns to the bar. 

The bartender says, "Say, you're the father of the typical Texas baby that weighed 25 pounds at birth. How much does he weigh now?"

The proud father answers, "Seventeen pounds."

The bartender is puzzled, concerned, "Why? What happened? He already weighed 25 pounds at birth!"

The Texas father takes a slow swig from his long-neck Lone Star beer, wipes his lips on his shirt sleeve, leans into the bartender and proudly says, "...had him circumcised."