Lego cock Share definition Flag Reference to ones cock when other parts of their body resemble traits of a Lego (a children's toy) character. Such as the hair face and/or body shape "Brooksey has lego hair, so he must have a lego cock" Lego cock by Jimmison! October 27, 2008 0 0 Get merch Get the Lego cock mug. Buy Now — $32.95 See more merch