M-I double SS I double SS I double PP I from I think Bobby Gentry.

Also MOTHER from "Redneck Mother" by Bobby Bear.

M is for the mudflaps my mother done bought me for my pick-up
O, is for the orl I put on my hair
T is for Thundebird,
H for Haggard, Merle,
E is for eggs, and
R, that for REDNECK