Eeny, meeny...

Eeny, meeny, miny, moe,
Catch a tiger by the toe.
If he hollers let him go,
Eeny, meeny, miny, moe

From Wikipedia:
"Eeny, meeny, miny, moe", which can be spelled a number of ways, is a children's counting rhyme, used to select a person to be "it" for games and similar purposes. The rhyme has existed in various forms since the 1850s, or perhaps earlier, and is common in many countries. Since many similar counting rhymes existed earlier, it is difficult to ascertain this rhyme's exact origin.

There were several other versions of this rhyme, one of which was too controversial to mention. But, other variations included:

Eeny, meeny, miny moe,
Catch a tiger by the toe.
If he hollers make him pay,
Fifty dollars every day

And;

Eeeny, meeny, miney, mo.
Put the baby on the po.
When he's done,
Wipe his bum.
And tell his mother what he's done.