AggieBethie, I presume your screen name means you're in Texas. I hope for your sake you aren't a blonde. Since Texans tell Aggie jokes instead of Polack jokes or blonde jokes, if you were you'd be in as bad shape as a couple of guys I know who are lawyers that play banjo....Anyway, if you want a source for bawdy cowboy songs (probably out of place at a RennFaire), check out The Whorehouse Bells Were Ringing, and Other Songs Cowboys Sing by Guy Logsdon (Univ. of Illinois Press, 1989). It's actually a fairly respectable scholarly work, but has good songs.
Peter.