I frequently swap songs monthly with a small but very energetic group , so here's my contribution :

"The Cat Came Back" (in D) (( I do nine verses at last count

and am always on the lookout for additional ones !!))

If I'm asked for an encore, I'd do "Ramblin' Boy" by Tom Paxton

(in C).

I'm also very partial to "Delia's Gone" sung in dialect.