Considering I made fun of ourselves, Canadians, I'm not sure how it was anti-American. I assume your joking as per recent accusations involving other people in other threads. Not a road I'm going down in any case.
Anywhoo, I just found it humorous to see a product Americans enjoy making fun of, in an American filmed TV show. I know there are a few 'Timmies' in North Eastern US but I believe the show is filmed in SC.
I guess my sense of humor was not shared. Except by Barney. He gets it.... Barney at Tim Horton's