A Buckle
A buckle is when you're so wasted you can't think straight, like you've been drinking all day and your brain is a mess.
A buckle happens after you drink 10 cans of soda and eat a whole pizza.
A buckle happens when you try to walk home from the pub and fall into a ditch.
A buckle happens when you start singing 'Let It Be' at 2 AM and can't remember the words.