Plaster their desk with a picture from their 8th grade yearbook.

8thgradepic

Image: Imgur

Toot their horn a little.

air-horn

Image: World Wide Interweb

Bieber Fever

bieber-office-prank

Image: World Wide Interweb

A wardrobe malfunction.

bathroomsign

Image: LOL Pranks

Treat them like royalty.

castle

Image: Imgur

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