Kerry Slang Terms, Expressions, & Irish Spoken Language - Irish Phrases
Meaning "as if" or "by the way". can be used to add sarcasm or to exaggerate a statement. usually used in the middle or at the end of a sentence.
To say that someone "can't drink fog" is to say they're a lightweight at drinking.
It's history comes from many a Kerry man who has emerged from a pub after many pints, is suddenly hit by the air and immediately feels more drunk