There are a lot of cannabis-focused youtubers in the US who upload daily cannabis content and info which often features crazy challenges including massive dab hits, multi bongs, extreme cannabis edibles and more.
We've been following Crutch420's youtube channel for a while, and recently watched a video he made last year when he his his first 1000 subscribers. To celebrate, Crutch consumes over 1000mg of THC (also known as one gram, but that certainly sounds less impressive). Just to put that in perspective, the average dose in products we have seen/bought in the UK are around 50-100mg so this is between 10-20 doses in one go.