Before Ralph tries a billiard shot to tie the house record, the cue ball changes positions. It moves from one side of the target ball to the other.
Ralph asks Norton what's on the late show, and Norton replies "Humphrey Bogart in Dead Men Tell No Tales". Humphrey Bogart was never in any such movie.
During Ralph and Norton's pool game, after Norton breaks and sinks a ball, Ralph takes the next shot even though Norton should have shot again. Also, Ralph takes the shot and misses, and still takes the shot after that, which should have been Norton's shot.
When Ralph is explaining to Alice why he didn't tell the Police because he didn't want his picture and address in the newspaper, Jackie Gleason flubs one line by saying, "Those guys will know right where they are." instead of what the script must have read as, those guys will know right where I am.
The two crooks are named Danny and Bibbo. At one point, they are discussing another crook named "Marty," who managed to "duck" from the police. Bibbo gets nervous when a police car pulls up in front of Ralph's building. Danny says to Bibbo: "Just get hold of yourself, Marty."