Make insanely hard challenges!

[cantab]

Lick William the Conqueror's elbow

[Tangle]

Go onto blocked websites in a garbage school without bringing anything.

[Dooz]

Go to pluto without a rocket..

[Helix935]

walk on the surface of the sun without any protection of any kind

[gooddog15]

watch sharknado with your friends and attempt to defend it

[cantab]

Ensure North Korea win the World Cup.

[Helix935]

love the last airbender movie

[cantab]

Assemble the Arkingthaad Lite perfectly with no debug menu, mods, or transferring of fuel.

[WinkAllKerb'']

being cantab'u'lation

[Palladium Corp]

Solve Ackermann(g64,g64) where g64 is Graham's number.

[Overfloater]

Listen to "Psy - Gangnam Style" and don't change station until it's over.

[Red Iron Crown]

Touch your ear with your elbow.

[cantab]

OW! Trying that hurt!

Run your CPU stably at 200 degrees C.

[Dark Junior]

Beat XCOM Enemy Unknown without ANY research except storyline ones.

[Overfloater]

Perform a one hand clap.

[TrainEngie]

land on eve with ant engines and no parachutes, wings, airbrakes, nose cones, and with Deadly Re-Entry and FAR

[HoloYolo]

Land the Sun on Kerbin. You can only use .625 meter parts and you can not pass GO.

[SchweinAero]

Deorbit a kerbal and catch them in a cargo bay between the altitudes of 30,000m and 28,799m so that every part involved remains intact. The catching craft's initial orbit must be inclined at least 185 degrees relative to the kerbal.

[windows_x_seven]

Lick your elbow.

[Xannari Ferrows]

Do not read the sentence below.

Look elsewhere

[Robotengineer]

Do not read the post above me.

[Kozak]

Challenge complete as it was on a previous page and i have not gone to that page yet.

Don't say any words with the letter E in the next post.

[Xannari Ferrows]

That isn't too difficult. But I say you can't go without saying a singular [or many] "A"s.

[TrainEngie]

Walk using your ears.

[UnionPacific1983WP]

My ears aren't big enough

Drive a train without going NerdCubed on it.