This video came up on my Facebook timeline in a non-WAM related group (I'm not in any WAM related groups on Facebook). I followed it back to the Tiktok account. Presumably the full Twitch steam is out there somewhere on her relevant account.

Tiktok user Mikaylahau pours two large jugs of custard over her head, followed up with milk.

https://www.tiktok.com/@mikaylahau/video/7009248737277103361?is_from_webapp=1&sender_device=pc&web_id=7008985588251248134

Incredible find, and what a solo effort she did!

It's considered creepy enough if people comment on a video more than even 2 weeks old, so it's unlike people will comment, thankfully.