The process of forcibly making yourself sick in order to stop feeling ill, enabling you to continue as you were. Usually used during a night out involving copious amounts of alcohol but CAN be used when feeling too full from eating. Tactical chundering can be achieved by using implements such as ones own fingers or anything of a similar appearance.
I went out into the smoking area and decided to have a tactical chunder but after I was done, the security guard dragged me out and put me at the bus stop outside the club where I proceeded to chunder into my pocket. But the second lot of sick wasn't tactical.
I felt so stuffed from the crumpets and huge roll I had that I considered tactical chunder but I was incorrectly informed that it would in fact be bulimia.