Stundenglass gravity bong

Cookies, gravity, bong

Stündenglass Gravity Bong

Gravity Infuser Bong

Beer bottle gravity bong

Comes with the bottle and slide (can request different brand than the bottle pictured)

Ready to use with the thumb hole and the airtight 14mm slide insert

All you have to do:

 Load the bowl

Put your thumb on the drilled hole at the base of the bottle

Fill with water

Put the loaded 14mm bowl into the airtight slide hole

Light and let the escaping water pull the smoke into the bottle

Take the 14mm slide out of the top and inhale or exhale from the top while someone else inhales from the drilled hole at the bottom

Gravity bong