h54b
H54B means you slap hands with someone just to show off your chest. It’s like flexing but with a handshake.
At the gym, I did an H54B with my buddy. He laughed and said I was showing off.
My mom did an H54B with her friend at the grocery store. They both looked proud.
My brother did an H54B with the mailman. The mailman was confused but still said hi.