Sinthu it

The art of smoking the last part of a joint or cigarette.

Stoner 1: "I'm gonna throw away the joint, it's nearly gone"
Stoner 2: "No! Let me Sinthu it, there's still some left!"

Shimho-ing

The act of changing the topic when someone who shouldn't hear the topic is passing by.

Person 1: "Hey so you know Mike is really messed up..."
Person 2: "Yeah dude that guy's such a loser"
*Mike passes by*
Person 1: "So what's Shimho doing now? I heard he's got a new job"
Person 1 just commited the act of Shimho-ing by changing the topic to something about Shimho.