First jokes

An infinite number of mathematicians walk into a bar. The first one orders a beer. The second one orders half a beer. The third one orders a fourth of a beer. The bartender stops them, pours two beers, and says, "You guys should know your limits."

Two hydrogen atoms walk into a bar.

One turns to the other and says, "I think I've lost my electron."

The other asks, "Are you sure?"

"Yes," the first says, "I'm positive!"

Two men were talking about their wives. The first man says, "My wife is an angel." The second man says, "You're lucky, mine's still alive."