Here's another one by Jim Croce! I just laughed so hard while I was making it! It stars Winry!
You Don't Mess Around With Jim
By: Jim Croce
Well Ishbal's got its rebels
And Central's got Scar
Loir's got Edward Elric
So the bad priest won't get far
He's as smart and quick as a kid can come
But he's small as a country mouse
And when the bad guy's all get together at night
They're all scared of Ed of course
Just because
And they say
(Chorus) You don't tug on Mustang's cape
You don't run off Al's head
You don't mess around with Homunculi
And you don't mess around with Ed
Well out of Resembool come a country girl
She said she lookin' for a kid named Ed
I'm a mechanic girl; my name is Winry Rockbell
But back at home they call me Win
Well I'm lookin' for the King of Lior's streets
He's travelin' round with a big metal mass
And after he broke his automail after it was just repaired
I've come to kick old' Ed's $$
And everybody said girl
You don't tug on Mustang's cape
You don't run off Al's head
You don't mess around with Homunculi
And you don't mess around with Ed
Well a hush fell over the shop
As Ed and Al bopped in off the street
And when the fightin' was done the only thing that weren't dented
Were the souls of big Al's feet
Ed was bruised in 100 places
And he was cut in a couple more
And you better know that it was a different kinda story
When Ed and Al hit the floor
You don't tug on Mustang's cape
You don't run off Al's head
You don't mess around with Homunculi
And you don't mess around with Win
You don't tug on Mustang's cape
You don't run off Al's head
You don't mess around with Homunculi
And you don't mess around with Win
No clue who's singin' this one either but it was about, of course, Winry beating up Ed and Al because Ed keeps messing up his automail.