WTF

Unless that video is spread out over a day, the dude would be puking just because the stomach would stretched beyond capacity. This probably isn't the most definitive source, but it's good enough for a lemmy comment. If one (medium) banana is 118 grams, the dude just ate something like 56.64 kilograms of bananas. I think that's something like 50,000 calories as well. I don't remember the actual number, but there is a physical limit on calorie absorption due to the process of digestion (you've only got so many surface microvilli and their mechanisms for intake/transport), and it's something like 30,000-45,000 calories a day.

I can see the light/shadow changing behind him multiple times during the time-lapse, so I'm guessing he ate them over the course of three or four days. It's hard to make out, but some of the banana peels definitely gain brown spots/regions over the couple of seconds, and that definitely doesn't happen quickly.

The fructose in most fruits also causes problems in large quantities (do a quick search on gout and fructose, it's a fun little biochemistry question), so that dude couldn't have been feeling too well afterwards. Normally you see it with folks who drink lots of sodas regularly. I think the example we were given was a dude consuming 4-5L of soda per day.