Just commenting to point out the use of "legless" to mean extremely drunk. I found this in an online dictionary, but it's new to me. Maybe it's a regional thing.
Brit here. Off the top of my head: 'bladdered', 'blotto', 'hammered', 'pie-eyed', 'pissed as a newt', 'ratted', 'sloshed', 'squiffy', 'sozzled', 'trollied', 'wasted', 'wellied'
These typically result from a night 'on the lash' or 'on the piss',