Sans: Hey Frisk, why didn't the skeleton go to the dance?
Frisk: Why didn't he go to the dance?
Sans: 'Cause he had no body to dance with!
Listen up, genius! The joke is that a skeleton has "no body," get it? So, the skeleton couldn't go to the dance because he had "no body" to dance with. In your case, you have a body, but you lack the brain cells necessary to understand simple humor.