Summer Will Drag-on

A poem based off a really bad pun.

The rumbling of a sleeping dragon
In his damp dark cave
Drank too much from the flagon
Summer heat doth fade
A chance to beat summer in a trance like death
Sleeping all the way
Yet what is hotter than dragon breath
Both muggy and decay
Either way a knight is a fool
If he disturbs the slumber
The dragon remains cool
The armor burns asunder
Summer will drag-on