Dangling participles, too:
'Having eaten our lunch, the coach departed'.
"Walking along the beach, the sun rose majestically into the sky".
DPs like that can be very amusing, but they really are the result of laziness in constructing sentences correctly.
However, I have a well-educated Yorkshire friend who considers "going for a lay down" as being perfectly acceptable. There's no doubt that regional dialects are part and parcel of the English language and should possibly not be clamped down on too heavily.
And thank you, thank you, thank you for drawing attention to the word "fulsome"! It's a classic example of how words can come to be used, quite often in this case, in the wrong context because somehow its true meaning has got lost.
Another gripe of mine is when asked in questionnaires things like - "Did you find this satisfactory, very satisfactory, or extremely satisfactory?"
Also I recall some years ago a well-known supermarket chain offering its customers "permanently low prices for ever".