This isn't the one I wrote back then, but off top my head:

Red Snails In My Sunsuit
(Tune: Red Sails In The Sunsuit)

Red Snails in my Sunsuit,
Way down in my pants,
They're slurping my lotion,
They're worse than red ants!

Loud wails at their gnawing,
All day it's been "Ewww!"
Red Snails in my sunsuit,
I'm itching from you.

We went to the seashore,
We went for a swim.
Now they've taken over --
How did they get in?

Red Snails In My Sunsuit,
You're driving us nuts!
You're ruining our tan lines,
You're chewing our butts!