During the bowling match, Blowhard is shown shooting an 8 on one of his frames, missing the 7-10 split, but later according to the score sheet, it shows that he has not scored above 4 in any of his frames.
After Blowhard misses all the pins with his first two throws he moves over to the next lane for another turn even though none of the other lanes have pins set up on them and it isn't his turn anyway.
When Wilma is talking to Betty while she is dusting she picks up the vase and dusts under it twice.