A blonde walking near-by heard the brunette. So, the blonde asked if she could join the brunette.

The brunette said sure and together they said, " 22, 22, 22, 22.."

Later on a train comes down the track. The brunette jumps off, but the blonde is not so lucky.

So, the brunette jumps back on the track after the train is gone and says, "23, 23, 23, 23..."