Crab mentality is very much alive. In fact, it is very common in the Philippines.

No,  it does not mean being crabby nor irritable.

Crab mentality means, people try to pull you down hoping you will not fly your lovely society. It is an act of  desperation to bring you down. It is an act of jealousy or  envy. It is an act of cowardice. 

Their modus operandi is usually gossiping, a favorite past time of the jobless, poor and miserable people.

They love spreading fabricated lies without proof nor evidence

when asked about proof,  they lie some more to cover the other lies

Are you one of them? No lessons learned in the past but dramas and continuation of immaturity and bitterness.

What a pity .