residual online effect

When facebook chat shows that someone is online, but they logged off 2 minutes ago

"I got on facebook, chatted someone, and they logged off! wtf?"

"Dude, it was probably just the residual online effect"

Residue effect

The last forty minutes to an hour of the effects of marijuana, which at the point is meant to be soothing and wear off it paranoid and overly stimulated feeling.

Yo man, the music sounds the best during the residue effect