look up any word, like fleek:
 
1.
Time to smoke a spliff. (A phrase made popular by the Wiltshire-based band Layabout)
"What time is it?"
"It's J-Time!"
by Big Bad Maureen April 26, 2007
 
2.
Mad lyrical emcee from Yorkshire England,
Gazza: jtimes cumin out tonight

Callum: Yes Hopefully He'll spit a mad lyrical rhyme!
by The legend of Yorkshire November 26, 2011
 
3.
When an individual needs to jackoff.
Mike- "Hey Sean, what time are you taking out Heather?
Sean- "Right now, but I have to squeeze in some J-Time before I pick her up."
by Dr. Patrick Bateman December 13, 2006