A real-life variant of the duckrolling and rickrolling pranks.
To hand someone a glass of the light or diet version of some drink, after either he/she has explicitly asked for the regular version or you told him/her that it is the regular version.
Literolling is the act of giving the light version of the drink while the victim thinks he/she is getting the regular version. To be literolled is to be that victim.
Guy 1: I asked John for a regular cola, but this is definitely cola light.
Guy 2: Yes, he is a well known literolling predator, and you have been literolled.