He didn't slap anyone at first. He just floated. He watched a Bob player rage at a Cloud player. He drifted over the platform, dodging an incoming boulder by tilting left. This was power.
Slap Battles uses a tiered banning system: slap battles fly script work
If you want to move through the air without being banned for "scripting," these gloves are your best bet: : This glove is obtained by touching the Orb of Flight He didn't slap anyone at first