Three word game ...

[Wixsteman]

In baggy trousers

 

[classic33]

wearing floral dance

 

[Fnaar]

-motif suede undercrackers

 

[classic33]

under their trousers

 

[mistyoptic]

(which were baggy)

 

[Wixsteman]

And shiny purple

 

[classic33]

, akin to plum

 

[Ming the Merciless]

tart with custard

 

[classic33]

poured on top

 

[Wixsteman]

Of the hill

 

[classic33]

by Jack for

 

[Wixsteman]

Another splendid example

 

[mistyoptic]

of roly poly

 

[Fnaar]

holy moly Batman,

 

[classic33]

said Robin, reliant