Green’s Dictionary of Slang

badered adj.

[legless adj. (1); ult. the RAF’s ‘legless ace’ Sir Douglas Bader (1910–82), immortalized in the film Reach for the Sky (1956)]

drunk.

[UK]J. Meades ‘Rhodedendron Gulch’ in Filthy Eng. 123: Easy to imagine what happened later, when all the guests were badered. They were all men, you know, and they really were badered; and staggering and stooping they dipped what we call their male organ into that fountain.
‘Bob’ ‘Hungover Gloss.’ at HairyTongue.com 🌐 This is a supernatural ability to converse with the Big Chief on the porcelain phone, in His own language, the day after getting badered.
[UK]J. Meades Empty Wigs (t/s) 349: [E]ver since I saw the wasted remnants of Brian Jones lurching about The Speak badered and lisping.