Scumclap Share definition Flag Scumclap is when chavs make silly handshake/clap when greeting other chavvy mates. A: Yeah man! Aint seen you in ages.B: Yeah man respect! Lets do our scumclap! Scumclap by I hate chavs/scum March 30, 2010 0 0 Get merch Get the Scumclap mug. Buy Now — $32.95 See more merch