Staying up all night and doing absolutely nothing. Jay-Park-ing could be extended up to 3 days. Doing nothing includes, but not limited to: playing RO, playing DotA, watching Star Wars Trilogy, YouTubing, etc.
Doing 16 shots of whiskey within 20 or less minutes and waking up at the hospital next day with loss of previous night's memory. Jay-Parking may include chugging any sort of mickey. In case the drink is Jack Daniel's, the definition extends to "Finishing a 40 of JD within an hour with no chase"
2) A: "Man... I didn't get any sleep last night"
A: "I don't know... I didn't do anything really"
B: "Shiiiiiit son! Jay Park!!
3) "I'm gon JAY PARK THIS MO@#&FACKA!"(pointing at a mickey of smirnoff)
4) A: "Yo, where were you last night"
B: "I don't know man don't ask me, I woke up at the friggin hospital this morning"
A: "Oh shiiiiiiit son, Jay Park!"