no-sleeper 

A no-sleeper is the corporate equivalent to a no-hitter - a presentation in which nobody dozes off.

Kurt had a no-sleeper going until he got to the financing options slides - then he lost it. Badly.

no-sleeper by PsychoPuppyDad August 1, 2014

No sleeper 

Someone who is woke and aware of everything that is occurring around them

Billy-"Matt you high as a kite last night in Friday's watching the game and you were still able to realize that our waiter took an hour to come to our table to take our orders."

Matt-"no sleeper brah."

No sleeper by Derogatory term June 14, 2018

Nosleepery 

A piece of horror which will ruin sleep for you for the next few nights.

A: Did you see that rape scene in The Hills Have Eyes?
B: Yeah man. That was some straight-up Nosleepery.

Nosleepery by English Student. April 12, 2015