April Fools 2011 Round-up of the Day:

Redditor swampgum upgraded Reddit’s classic “Voice Activated Printer” prank with a stylish, official-looking, print & paste instruction sheet for hours of guaranteed hilarity. Click here for different versions by printer brand. 

Elsewhere:

• April Fools 2011: The Big List.

• April Fools Day 2011 Roundup: The BEST Pranks Of The Year.

• Top 10 2011 April Fool’s Day hoaxes.

• April Fools’ Day 2011: Top 10 stories or pranks.

• Celebrity pranks around the web. (Sadly, Snooki getting more money to speak at Rutgers than Toni Morrison is not on the list.)

• 50 easy April Fool’s Day pranks to play on your friends.

• In Case You Missed It: Google Prank Round-Up; ThinkGeek Prank Round-Up.

Special Mention: IKEA Australia’s HUNDSTOL Dog Highchair.