The act being caught by the head, whether voluntarily or through coercion, in a bottlebank, those most commonly used to recycle glass. The bottlebankee is then submitted to some form of sexual abuse or pleasure (depending on the situation), before being abandoned/rescued.
The origins of this practice are unclear, as are the motives for willingly being submitted to the stench of stale alcohol or other festering liquids whilst suffering molestation, however it is often linked more toward a homosexual activity than a heterosexual one, as described in the British sitcom 'The Inbetweeners' in Series 3.
I was walking through McDonald's car park last night when my head was forced through the green glass recycling slot and I was thoroughly raped. I later found out that I had been subjected to a practice usually known as Bottlebanking