sqaud up Share definition Flag to round up all of your most loyal members of your gang when a fight breaks out, or when you are provoked in a threatened way. If ya'll boys got plex then sqaud up. (You get yo boys, and I'll get my boys. sqaud up by Sponge B February 21, 2005 0 0 Get merch Get the sqaud up mug. Buy Now — $32.95 See more merch