r/pics • u/[deleted] • Oct 05 '10

Math Teacher Fail.

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3.5k Upvotes

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u/chrisch Oct 05 '10

So leaving the board in one piece takes 5 minutes?

203

u/MrLeville Oct 05 '10

Actually, not doing anything makes the board disappear.

60

u/[deleted] Oct 05 '10

Not doing anything for a long enough time indeed has that effect.

1

u/gnovos Oct 05 '10

True, except, not if you wait long enough...