basically anytime someone says something really ignorant, stupid, or douchie; with the intent of looking cool, they deserve a fag stamp.
its a hypothetical stamp that would be given to the forehead. such as a stamp received for entering a bar. but in this case its for labeling fags. (not homosexuals)
person B: Come get your fag stamp.
Etimology: Origionaly coined by "port3024"
Ambiguous: stfu fagstamp, go cry, lonely and in a corner.