I guess it's another case of "target audience"
since men's lives don't generally depend upon
looks alone, there's no real target, thus the
lack of any identifiable humor.

that said;
I think the butt of both those jokes wasn't so
much at being ugly as men getting blind drunk.

Pub Humor. crazy
I guy walks into a bar...
Silly sod, shoulda' watched where he was going!
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"...or am I a butterfly dreaming she's a woman?"