nonce sonnet with envelope refrain in the octave

Welcome to Circus Street City of Clowns,    
where only small children govern the town;            
    Snakes . marbles . slithering swords
    sink down shiny red innocent throats
    of fire blown mouths and r-rated jokes
    while one-legged gents tip pennies to whores. 
Beneath blue tents hiding the rounds
lie joyous traditions of being a Clown.

Tiger tamers . tricked four-eyed freaks
guard miles of walls to keep out the peeps
of Toms . Nancys . adults who fear
their child's been stolen for sex shows and beer.
Lions and little girls laugh in their sleep,
at all misconceptions of Circus Street creeps

(back when)