A typical Texas baby boy

A man from Texas buys a round of drinks for everyone in the bar as he announces his wife has just produced "A typical Texas baby boy weighing twenty pounds." Congratulations shower all around, and many exclamations of 'wow!' are heard.

Two weeks later he returns to the bar. The bartender says, 'Say, you're the father of the typical Texas baby that weighed twenty pounds at birth, aren't you? How much does the baby weigh now?'
The proud father answers, 'Fifteen pounds.'
The bartender is puzzled. 'Why? What happened? He already weighed twenty pounds at birth.'
The Texas father takes a slow sip from his beer, wipes his lips on his shirt sleeve, leans over to the bartender and proudly announces, 'Had him circumcised.'

Many thanks to Tuija.