Laughing so much I've tears in my eyes - I particularly love the one with the mouse!

Here's one, normally sung in a tight Presbyterian accent, preferably with the whistly 'S' and 'T' sounds.

Last Sunday morning, as I was going to Mass
I met a guid wee Orangeman and I shot him… as I passed
His body fell down, and his soul it went to Hell…
(missing bit)

Now there is a tree
And it grows down in Hell
And there's ne'er a leaf upon it
But the souls of old Orangemen

And if one of them should die
Och, the Devil he leaps for joy
Saying "I've a warrum corner
"For you, my Orange boy."

Rally right fol the daddy
Rally right fol the dee
Rally right fol the daddy
And bad luck unto the Queen

(and further verses, gone from me now).

The 'de Valera sold his shoes/to buy ammunition for his men' is a skipping rhyme, I think, rather than specifically sectarian fun. Dev used to appear a lot in our skipping games.