Involves the beating of a non-disco dancer caught by a number of drunk, brand name wearing, backwards cap bald-spotting males who have been angered due to hearing a form of music other than disco, otherwise known as repetitive club music with a worn out four-four mind erasing lame beat. A branch is severed from a tree (or whatever crude cudgel-like object discovered nearby) , thus becoming a "disco stick" to demonstrate in a concrete way the power of disco music. Can also describe the point of view of a listener at a dance club wherein the music becomes a torture device, a disco stick used to beat simplistic garbage disguised as dance music into one's head through speakers.
Having to endure that pointless music at that club made me feel as though I had been beaten mercilessly with a disco stick.
2. A sex move - a man snaps glowsticks of various colours and pours the liquid on his genitals, producing a 'psychadelic' effect during intercourse in the dark.
3. A pop culture allusion made by Lady GaGa to a penis.
"Let's have some fun,
this beat is sick
I wanna take a rid on your disco stick."