I think I'm going to Chunder

But who was it?

An examination of the crime scene has found this patch of chunder near the bar (circle a.). The actual patch was located a few yards up the street (circle b).

A detailed forensic examination, as well as accounts of beer chugging contests last night have incontrovertibly pointed the finger at one man:

O R G B!


now I ask you, is that any way to Behave?!