That’s certainly an odd way to celebrate. Luckily, in the age of the internet, nothing remains a mystery for long. Helpful Twitter user @filthiephil pointed out to another Twitter user that this is a thing in Australia these days, and it’s called a “shoey.”
@Matthew_Tynan@HPbasketball It's called a shoey. It's quickly become a staple at Australian parties/sporting events/christenings or anything with more than 3 people
A quick glance at your favorite search engine confirms Phil’s explanation. The shoey is indeed a newly popular means of celebration in Australia, a trend popularized by F1 driver Daniel Ricciardo. We’ll let him explain (via News.com.au):
“I didn’t start it,” Ricciardo said. “Well, as far as I know I started it in F1 but not worldwide. It was a few loose Aussies, from what I saw, the Mad Hueys — they’re surfies and fisherman and just loose guys. They travel the world fishing, surfing and whatever and they like to drink a bit of beer and whatnot, and that’s where the shoey began.
“On their travels they’d get people to do it as well and it’s just a bit of a laugh. I know Jack Miller knows a few of the guys from the Mad Hueys, so when he got his win in Assen, I suspected he was going to do it, and he did, so I thought I’d keep the Australian tradition going.
“Now Valentino [Rossi]’s got in on the mix. I saw he Instagrammed it yesterday and he said, ‘Everyone loves a shoey’ and ‘delicious’ and all that. A few words I used for it.
“I think it’s just a bit of fun now — everyone’s enjoying it.”
So there you have it. In all likelihood, the Clippers were playing host to either an Australian fan or someone with an affinity for Aussie culture — and when he saw his moment to shine, he turned to the shoey.