F and F

Freddy and Fanny were feathers
They did a balancing act
Said Fanny to Freddy you’ll have to lose weight
You’re ruining me blimmin’ back
 
They entered the Britains Got Talent show
They felt they were in with a chance
But Freddy fluffed up all his vanes, and barbs
And Fanny fell under the weight, what a blow.