Squinguilater Share definition Flag {Pronounced Swing-jew-later} A massively annoying person, Someone Who Harasses. I Was Talking To My Girlfriend When A Squinguilater Came Up Behind Me And Started Talking. Squinguilater by teh_awesome_geek December 29, 2010 0 0 Get merch Get the Squinguilater mug. Buy Now — $32.95 See more merch