The amount of time, at a live performance by a popular band, between the beginning of a song and the beginning of the wave of applause signifying that the audience has realised which song is being played.
A: Man, the Perceptisonic Lag on that song was huge... Did those idiots not know what they were listening to?
B: They did play it pretty different from the album version...
A: Yeah, I guess so. But I knew what it was.
B: They did play it pretty different from the album version...
A: Yeah, I guess so. But I knew what it was.
by unfairrobot December 19, 2012

The effects of having to quickly become accustomed to routine in another time zone and also of altitude changes. Causes fatigue.
by Kung-fu Jesus July 6, 2004

When you're on a bus for too long and you feel tired, sleepy, disoriented, etc. because of being on the bus too long
by Thebroski 138 November 20, 2016

To have your biorythms altered after much merry-making. Similar effects as jet lag but not from a significant change in time zones rather from partying too much.
by Elektrik October 14, 2008

A temporary disruption of bodily rhythms caused by a not so refreshing nap. You'll find yourself in a state that holds the middle between sleeping and being awake.
Effects such as drowsiness, disorientation, confusion, nausea, feeling crappy and looking particularly cute are not unheard of. To date there is no known cure for nap lag.
Effects such as drowsiness, disorientation, confusion, nausea, feeling crappy and looking particularly cute are not unheard of. To date there is no known cure for nap lag.
Melissa: "hi"
Mark: "hi! how was your power nap?"
Melissa: "not too great, i'm suffering from nap lag.. :("
Mark: "oh noes!1 :O!"
Mark: "hi! how was your power nap?"
Melissa: "not too great, i'm suffering from nap lag.. :("
Mark: "oh noes!1 :O!"
by a tad anonymous April 6, 2008

Person A: "hey, how are you?"
Person B: "I'm OK, but feeling a bit Pub-Lagged, I went to the Live And Let Live at about five today."
Person B: "I'm OK, but feeling a bit Pub-Lagged, I went to the Live And Let Live at about five today."
by J Kelso December 6, 2006

A situation where your sleep patterns have adjusted to a new time zone, but your bowel movements are still in the previous Timezone. This can be problematic for people who prefer to have natures calling before their morning shower.
by Jayspray June 5, 2018
