Boom x4 (sometimes stylized as boomx4) is an animation meme created in 2017.
The meme involves the character harassing another OC, and usually twerking before speaking the other OC and doing a pelvic thrust.
The OC is last seen with the other OC on a leash while still dancing along to the music.
- The song that is included in the meme is an ear-rape version of Boom Boom Boom Boom!! by the Vengaboys.