It makes you go to the bathroom during a week.
It makes you alucinate for a few seconds.
It makes you bigger, recovers health or makes you go quicker (Beneficious effects) depending on whitch mario game you are playing.
It gives you an extra life in case of death.
It makes you invincible for a few seconds
You can expulse fire.
It gives you the power to fly
It gives you an extra life
You hit your head and stay unconscious for a while
The block pays you the hit back
From the inside of the block an object or a coin will come out that will help you on the stage.
Since when do those kind of blocks exist??
Normaly you get in them and warp to an other pipe connected to the first one if the pipe isn't blocked
They arent usefull for anything. They are a simple decorative element in Mario's world.
They arent usefull for anything. And if you get to close to them they will try to atack you by hitting you.
You can throw tem at your enemies.