Expanding the strike zone

[Porch Dog]

I've thought about posting this question for a couple of days. I even reviewed the postings over the last year to see if the subject has been addressed. Well, here it goes! Is it EVER acceptable to expand the strike zone to hurry a game along to conclusion? I've done it a couple of times and it always seems to come back to bite me in the fanny (maybe I've answered my own question). THANKS! Porch Dog