clap your hands

http://en.wikipedia.org/wiki/If_You're_Happy_and_You_Know_It

The original song as it is known to many people begins:

If you're happy and you know it, clap your hands.

If you're happy and you know it, clap your hands.

If you're happy and you know it,

And you really want to show it,

If you're happy and you know it, clap your hands.

A common variation of the fourth line is "Then your face will surely show it."

The song usually proceeds with other verses that replace "clap your hands" with alternate phrases such as "stomp your feet."

OTHER VARIATIONS

If you're happy and you know it, then your face will surely show it

If you're happy and you know it, then you really ought to show it

shout "Hurray!"

(hoo-ray!)

say "Amen"

(Amen)

slap your legs

(slap slap)

turn around

snap your fingers

(snap snap)

slap your knees

(slap slap)

nod your head

(nod nod)

tap your toe

(tap tap)

honk your nose

(honk honk)

stomp your feet

(stomp stomp)

clap your nose

(sniffle sniffle)