Because they don’t have the guts!
Seriously though, you come across them in a dungeon and they all attack you. Like why aren’t they attacking each other?
Nice, no meat on that joke
I’ve got a real bone to pick with this joke.
I bet the OP has no spine to refute that
He surely has a spine, just not the nerves to defend himself.
Congratulations, you somehow failed at making a joke about skeletons.
But he has a sense of humerus
No that’s the intestines monsters. Now they’ll fight each other. Skeletons will fight them for the guts too. Skeletons LOVE guts and fight anyone for them especially each other, but they are notoriously bad at keeping them, since they don’t have musculature or skin to hold the guts in. That’s why they don’t have the guts and the context for this joke.
Neat fact - everyone has a skeleton inside them, well, unless you’re propelled entirely by magic like skeletons are