Something completely random. Usually 2 or 3 random words from a random word generator. It's how Ive created most of my usernames over the last 3 or 4 years but my gaf name is a relic.
ChinStrap Aristotle
NoTime2Explain
Just Let Me Put Da Head In
YouSure BoutThat?
Glory Tear
Ignorant DwayneWayne
Nightman Cometh
Young Neil
Sophisticated Ignorance
Creaking Skull maybe. Something to weed out the verb use when trying to find people who replied to me. I do like Creaking by itself though. Distinct enough, even a little namey, and I get to pretend to be a Castlevania boss when I'm feeling blue.