Now, let's get to the not-so-fun side effects of eating too much onion. Bloating and gas are just the beginning - onions can also cause heartburn and indigestion in some people. And if you're really unlucky, you might even experience some good old-fashioned stomach pain!
But wait, it gets even better! Onions are also a natural diuretic, which means they can make you pee like a racehorse. And if you're not careful, you might end up with a nasty case of onion-induced dehydration. So, be sure to drink plenty of water if you're going to go on an onion-eating binge - your body (and your bladder) will thank you!