The amusing appearance of the funny glass bong like donut beaker glass bubbler strikes you a lot. 

As you can see from the front perspective of the funny glass bong, the mouthpiece is donut shape.

What you may not know is that the showerhead percolator of the funny glass bong provides super efficient filtration. The smoke produced by the donut beaker glass bong will be substantially purified by the showerhead percolator of the mini dab rigs. There are four hollow tubes connecting each other for more powerful percolation. The smoke will be pushed into you lungs when you inhale as the air pressure is rapidly reduced to an extrmely low level which makes the smoke to be greatly crushed into smaller strings so that the beaker bongs can have its full potential to be completely released for the funny glass bong.