yes! just the one, which I think is from lamb chop's sing-along? which goes like

this is the song that never ends /
it just goes on and on my friends
some people started singing it, not knowing what it was /
and now we'll keep on singing it forever just because /
this is the song that never ends (...etc.)

I suppose I also knew 99 Bottles of Beer on the Wall, but that song does theoretically have an end