Are You 'In'?

(With profound apologies to the estate of Theodor "Dr. Seuss" Geisel)

I've always wanted to be "in"

I've always wanted to be thin

I've always wanted a nice grin

I've always wanted a cleft chin

I've always wanted handsome skin

I've always wanted Rin Tin Tin

I've never played the mandolin

I've never sampled bathtub gin

I've never loved a manikin

I've never visited Berlin

I never know quite where I've been

I've never wanted to begin

Drinking tea with saccharin

I've always wanted a "good" twin

I'd like to grow a dorsal fin

And take a sports car for a spin

I always have admired sin

I've always wanted discipline

To buy and fly my own zeppelin

It looks like I may never win