Usually a girl, but can be a guy, who attaches herself to a guy or faux friends who have plenty of 420, just so she can suck on the bong and get high. The Bongsucking Leech has no money and contributes nothing to the party, so to speak, may not even be cute, but will sometimes perform sexual favors or do errands to work off some of the leech-ery in trade.
That pink-haired chick is such a bongsucking leech, she is just using him for his weed. She even admits it behind his back. Now I think she's even moved in with him and cleans his apartment and cooks just so she can get high now.
Upon smoking more weed than is necessary or advisable from a bong with ancient water, the act of pouring the thick, murky liquid on a piece of paper and saying the first thing that comes to mind. Much like saying what you see in a cloud pattern and very closely related to the Rorshach Test. A good indication of what lurks in one's subconscious.
Ryan and I smoked 47 bong hits and then dumped the bong water onto some paper. I performed a Bongshach test on Ryan and he said that he saw the face of God or maybe a large cookie in the representation.