Hmmm Poor Brian Indeed, for I will put money on the fact that Brian will be revisited by that little beauty. Without any shadow of a doubt it is a cyst, a Sebaceous cyst filled with the most foul smelling kerinatous substance known to man!! Such a cyst should be removed intact, or if "burst", all the remaining "gunk" needs to be properly scraped out and the subsequent wound treated..... Not one to try at home !!!
I have witnessed some fairly grim occurrences, but must confess that at one point during the clip the gag reflex occurred.......