1. if necessary

2. in trouble

to fuck someone who is nasty! to eat her pussy instead of being celibate! you last resort to get box!

In the Cannabis Growing industry, in Canada anyways, pinching refers to removing the growing top parts of a Cannabis plant (called the apical meristems in biology) , and often the grower uses his fingers to remove the young shoots of the plant, thumb & nails as if to pinch something that's why they call it to pinch to chop off the young shoots of the plant, so that the continuing growing part of the plant will divide and later produce more product, more Cannabis smoking material, according to professional growers.

to get arrested by the police.... a very old term.

When an asshole of a drug dealer buys weed, and resells it for the same price, but pinches some weed from the bag for himself and not telling the buyer. Therefore, accumilating weed for free.

To steal a small amount of Marijuana from someone elses bag.

A very little amount or to a small degree. Opposite of grip of, grippa, gang of, and hella. See also pincha.