'Suck it' was a fad during the 90's used by many children in elementary and middle school. This often went along with a motion; crossing one's arms at the wrists, and hitting the crotch area while they lean back. Though it may be coming back, if one were to ask a group full of children what the motion meant, it is probable that only one may know the answer.
When it became beknownst to the teachers back in the 90's, anyone seen in the act of such a motion would be prosecuted and/or severly punished (e.g. detention, whippings, time in the corner).

A term used to reference cannabis/marijuana/weed.

A term used by the legendary wrestling group, the D-Generation-X, which is often used to imply that you want someone to put their mouth on your dick and suck it like a lollipop.

some bad insult people use.
good response for it in the example

Quick and simple explanation of one's choice of action?

A phrase you direct towards people you are angry at.

the best term to use when ever possibe ;D