Very drunk, lugholes meaning ears so of course drunk up to the ears, literally!
Expression common in South Wales
You shoulda seen Owen last night, he was hardly able to speak he was so drunk ......... he was standing by the bar, slugged up to his lugholes with a big bag of fish!
I always get slugged up to the lugholes on a Friday night!
slip of the tongue perhaps,
Those idiots who drive around in a ridiculously raised pick up truck, making a top heavy vehicle even more top heavy and unstable
A:*gah*
B: "Whats the matter"
A: This dam prickup is blinding me.
B: Stupid thing's, as if there lights weren't blinding enough as it is.