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1.
The act of preparing and consuming a coffee between the time of 3:30 pm EST to 4:30 pm EST.
Lets have Chuck Time! or We need to get Chuck Time now or it will be too late.
by ChuckTime! November 25, 2010
 
2.
noun
(see chuck)
Time spent or planned to be spent 'chucking'.
"It's chuck-time!"
by Dominic June 04, 2004