There once was a gal named Grace 
Who had an ugly face 
—She said, 'My face I don't mind it,  
—'Cause I am behind it 
And It's a good hiding place. 
 
Truly, I am no creep 
And it's not just poor upkeep. 
—I was born this way 
—So remember today 
That beauty is only skin deep. 
 
I'm really a nice old gal 
Who's in bad need of a pal 
—Take a chance on me 
—And we shall see 
If this leads to knowledge car-nal.' 
 
He said, 'Although there's a doubt 
I'll give her a good tryout 
—I put a bag over her head 
—When I took her to bed 
And that's how this thing worked out.'
George Hunter
http://www.poemhunter.com/poem/a-gal-named-grace/