Almost complete incapacitation due to excessive alcohol consumption. A toilet-hugger is likely to wake up in the morning on the lavatory floor with a raging hangover.
Digby was left toilet-hugging drunk having had one pint of Strongbow too many at the golf club on Saturday night.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.