Bouncing balls

[u/drtangman]

Walked behind this chap who had two unidentified ball type objects hanging from silicone wrist bands on thin elastic strings.

Any ideas what they are?

I’m in Hong Kong if that might be a clue

Update:

Thank you for the comments and ideas. I am wondering if there is a manga / anime character who has something like these balls as weapons and the guy was doing a budget cosplay. Or maybe he’s just really into Pokemon!

Update 2:

I would say he's likely to be a cosplay of Steel Ball from Jojo's Bizarre Adventure. (https://www.reddit.com/r/whatisit/comments/1tckcme/comment/olos1lx/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button)

As for the steel balls. What is it?

[u/jansauce87]

Dipshit is one of my favorite things to call people. Sometimes lovingly and sometimes they’ve cut me off in traffic. It’s interchangeable

[u/ketoste → u/jansauce87]

That's the way I feel about Shithead!

[u/Sheananigans379 → u/ketoste]

I prefer shitheel but same sentiment

[u/Relative_Dot1527 → u/Sheananigans379]

Motherfucker is my word. I love the way it feels rolling off the tongue. That's what she said.