roflcopter

Etymology tree
Proto-Indo-European *Hreth₂-der.
Proto-Italic *rotā
Latin rota
Proto-Indo-European *-lós
Proto-Indo-European *-elós
Proto-Italic *-elos
Latin -ulus
Latin rotulader.
Latin rotulāre
Old French roelerbor.
Middle English rollen
English roll
Proto-Indo-European *-onts
Proto-Germanic *-ndz
Proto-West Germanic *-andī
Old English -ende
Middle English -ynge
English -ing
English rolling
Proto-Indo-European *h₂en-der.
Proto-Germanic *an
Proto-West Germanic *ana
Old English on
Middle English on
English on
Proto-Indo-European *pleth₂-?
Proto-Indo-European *pel-?
Proto-Indo-European *pleh₂-der.
Proto-Indo-European *pleh₂ros
Proto-Germanic *flōrazder.
Proto-Germanic *flōruz
Proto-West Germanic *flōr
Old English flōr
Middle English flor
English floor
Proto-Indo-European *klek-
Proto-Germanic *hlahjaną
Proto-West Germanic *hlahhjan
Old English hliehhander.
Old English hlæhhan
Middle English laughen
▲
Middle English -ynge
Middle English laughynge
English laughing
English rofl
Proto-Indo-European *welH-der.
Ancient Greek ἕλιξ (hélix)
Proto-Indo-European *peth₂-
Proto-Indo-European *-r̥
Proto-Indo-European *péth₂r̥
Proto-Hellenic *pterón
Ancient Greek πτερόν (pterón)
French hélicoptèrebor.
English helicopterclip.
English -copter
English roflcopter
From rofl + -copter. Though popularized by the image at roflcopter.com (a website, now defunct) in 2004, the term appears to have enjoyed some use in 2003 and before, though seldom.