Line number 2 of "Hitch Me To Your Wagon" probably comes from Handy's Joe Turner Blues:

Handy: I bought a bulldog for to, watch you while you sleep,
Guard you while you sleep,

Weldon:I'm gonna buy me a bulldog, watch my baby while she sleeps (x2)
I'm gonna stop my rider makin' a midnight creep

I could just be a floating blues lyrics as many are combined from different songs.

-Richie