An assortment of random noises made using Microsoft Sam's text-to-speech. They're usually meant to sound like helicopters.
by yjmgc7x7 May 4, 2024

“Yo, that was so funny! roflcopter.”
by mizukithesilly November 27, 2023

The word roflcopter originated within the gaming community in the mid to late 2000's. When playing online games with friends it was common to use a voice chat application called Ventrillo. "Vent" as it was known, had a early text to speech feature. When you typed a long stream of "roflroflrofl"... into this feature and asked it to speak the text to your channel it sounded very much like the blades of a helicopter coining the phrase "rolfcopter".
by derpcock February 2, 2023

Of, like, or tending to induce massive amounts of rofling, especially enough to warrant use of the term 'roflcopter'.
by jade_nekotenshi June 8, 2011
