toe-tapper

Etymology
From.

Sense 2 (“joke”) derives from the practice of tapping one’s toes to indicate pleasure; compare. Sense 3 (“closeted homosexual, especially one who solicits gay sex”) derives from the 2007 in which then-Senator  (born 1945) of Idaho, USA, was arrested after tapping his right foot in a men’s restroom, an action seen as covert solicitation of sex.

Noun

 * 1)  A piece of music with a prominent beat, to which one feels compelled to tap their toes.
 * 2) A joke which is found to be pleasingly humorous.
 * 3)  A homosexual who is closeted regarding sexual orientation, especially one who solicits gay sex.
 * 1) A joke which is found to be pleasingly humorous.
 * 2)  A homosexual who is closeted regarding sexual orientation, especially one who solicits gay sex.