This episode is pretty funny, though it may not be one that stands out in your mind as the funniest. I think this show is so good overall, it's hard to say what is good or bad about it.
Another one of those episodes where Mama is accused of being something she hates: a cheap slut. You always hear her call Naomi a tramp, easy, etc. in how she dresses & behaves so it's ironic when Mama is thought of this way. I do find it unrealistic that those men would think that the posted body really was Thelma's after taking a look at her at the mixer, though. Even in her coat, you could still tell that she wasn't as thin as the body in the flyer.