Dazbo: the most basic way to get a 3/2 rhythm is to chant(or sing):
You shall have a fishy
On a little dishy
You shall have a fishy
When the boat comes in

(unless you slow up the "boat comes" as some singers do, which adds an extra beat at the end).
or alternatively

Buy Boom besoms
Buy them when they're new
Buy broom besoms
Better never grew