Green’s Dictionary of Slang

basted adj.

[fig. use of SE baste, to beat, to thrash]

drunk; one of a number of terms that equate drunkenness with suffering violence; many of the terms can also apply to the effects of drugs.

[US]M. Prenner ‘Sl. Synonyms for ‘Drunk’’ in AS IV:2 102: basted, blind, blotto, boiled [etc.].
[US]Wentworth & Flexner DAS.
[US]Eble Campus Sl. Oct.