sonicman69 Share definition Flag A joke that originates on the Misskey community of ActivityPub servers, refers to a sex act involving two hedgehogs (like those from the Sonic The Hedgehog franchise) 69-ing. Oh damn, look they're really going at it-- not everyone can pull off the sonicman69! sonicman69 by Bajax August 25, 2021 Get the sonicman69 mug.