Swimming, swimming (make a swimming motion)
In a swimming pool When days are hot (fan yourself)
When days are cold (hug yourself and shiver)
In a swimming pool (arms up over head)
Side stroke (swim to the side)
Breast stroke (swim forward)
Fancy diving too (plug nose and pretend to dive while singing this line)
Now don’t you wish that you could have nothing else to do BUT...
For each following verse, drop singing one line and only do that line's motion. It gets tricky!