A situation that prevents an individual or party from watching the cartoon Chalk Zone.

The childhood equivalent of a Cock block.
My mom hates me and beat my dog to death so I had to go to the VET instead of watching that boss ass episode of Chalk Zone. Bummer dude.

Rudy's got the chalk!

Chalk Block.
by a carniverous jive turkey July 24, 2011
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When a teacher is trying to teach, a distraction such as a phone ringing or another teacher entering the classroom, disrupts the learning about to take place
Ms.Mari: "Ok class, today we learn about Wind Resis..."
*phone rings*
Ms.Mari: *sigh* "One second class..."
Todd: "Dude, total Chalk Block"
by EpicSmith93 September 17, 2010
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