Caution! This Poem Will Make you YAWN!

Caution!
This Poem Will Make You

I get a feeling in my mouth
it starts just like an itch
then it spreads out to my cheeks
and begins to make them twitch.
The sensation comes at bedtime
and sometimes in the morning
I can tell it's starting up again
yes - I'm very nearly Y A W N I N G!
I'll try to hold it in my mouth
perhaps no-one can see
that behind my teeth I'm bursting
to set a big one free.
I must look like I'm chewing
or I really need the loo
my face is stretched and fit to pop
does it happen to you, too?