Think you know the Gravity Falls shorts? Find out now! Here are the links. Note: you may want to open them up in a new tab. To help you with the first few riddles, here's a reference. And here's something that might help with the bonus riddle.

Dipper's Guide to the Unexplained:

Mobius Chicken Strip / Candy Monster and Stan's Tattoo

Mailbox and Lefty

Tooth and The Hide Behind

Mabel's Guide to Life:

Fitness / Dating and Hair Topiaries / Stickers

Home Pyrotechnics / Fashion, Laughing for an Uncomfortable Amount of Time / Color and Flying / Art

Other shorts:

Fixin' It With Soos

TV Shorts

Mabel's Scrapbook

Finally,Bonus Riddle