Revealing mistake: When Joey sees his girl (again) in the water and rushes out to hug her (and she disappears again), there's a large brick home visible in the background, on their "deserted island." (00:13:35)
Visible crew/equipment: When Jesse and Becky are arguing by the waterfall, the shadow of the boom mike is visible on the rock behind Becky.
Continuity mistake: In the past episode, Stephanie lost a tooth, however in this episode, her tooth appears to be back in her mouth.
Star Search - S3-E6
Character mistake: When Joey comes in the house at night and makes jokes about everything, he picks up a fake duck. Jesse says to Joey "Jess, you've been living in toon town..." Jesse mistakenly calls Joey, "Jess." (00:06:20)
And They Call It Puppy Love - S3-E7
Continuity mistake: As Michelle sits in her room, Minnie comes in. Minnie knocks over Michelle's blocks and Michelle says "hey, you better fix it." However in the next shot, the blocks are once again in their container, untouched.
Misadventures in Baby-Sitting - S3-E14
Revealing mistake: The kid that D.J. Is babysitting gets his head stuck in the railing - the rail to the right is obviously a removable piece.
Deliberate mistake: Jesse is looking for his keys and thinks Michelle took them. Near the end, Joey comes home and finds the keys in the door, hands them to Jesse, who puts them in his pocket. A few seconds later Danny comes home, takes Michelle into the kitchen. Joey and Jesse exchange a couple lines and go into the kitchen, where Michelle is sitting in a booster chair at the table. The 3 guys chat for a few minutes, then Jesse is going to leave, but can't find his keys again. It turns out Michelle has them. But how did Michelle get them? She was in the booster seat the entire time Jesse was in the kitchen and Jesse never went to that end of the room, so there's no way she could have gotten them.
Continuity mistake: In Full House episode "Bye, Bye Birdie," at preschool when Michelle gets to wear the crown, the crown goes from the crown of her head to down at her ears and back between each shot. And sometimes her ponytail is in the crown, other times it is not.
13 Candles - S3-E17
Continuity mistake: In this episode Comet is still a puppy, meanwhile in the previous episode, "Bye Bye Birdie", Comet is considerably larger in the scene where Stephanie is trying to open DJ's diary.
Chosen answer: The first time was in the first season, episode 19 "The Seven-Month Itch", the second was in the fourth season, episode 1 "Greek Week", the third time was in the fifth season, episode 19 "The Devil Made Me Do It" and finally in the very last episode of the series, "Michelle Rides Again", season 8 episode 23.
jennibee