Fight Obesity, Punch a Fat Kid

Since thy first lady declare,
that we wageth war,,
and against obesity dare,
to restore waist of 34,
this knight errant I durst,
against the waist that burst.
who esteemeth my sword as straw,
to sip chocalate milk,
with burps defying Queen's law,
dagger against my spear of poplar,
is icecream sandwich in hand of globular,
My first lady biddeth,
so I not tarry,
to riddeth the fat kid,
and hire 12 commoners to carry.

*durst means dare,

*tarry means delay