demonic, ghost-like entities heard to be seen after listening to music for long periods of time, usually heavy/thrash/death metal
also: what seems to be the first real lyric in the song Ruin by Lamb of God
"HOLY SHIT last night i was listening to music when out of nowhere i was attacked by all these falaylays! they were fucking everywhere! it freaked me out!"
A small piece of information. Derived from the word ken, used often in the scottish language and is synonymous with knowledge.
Person 1: "Hey I don't get this shit. How do you solve this problem?"
Person 2: "I got that one. Give me some kenlets on this assignment and I'll help you w/ that one."