I may have some interesting perspective to shed on this picture/caption. Im taking a stab in the dark here because i know this kid personally but i have 0 knowledge of that night or its events other than this picture. It is my contention that he went to the apt with the intention of being Sam Adams and thought it would be funny to also drink Sam Adams, which also served the duel purpose of clearing up the ambiguity of his costume. He then got drunk and left the apartment with the aforementioned bell and the intention of yelling at people like paul revere would of done bc once the beer left his hand he was no longer Sam Adams and the bell went into his hand he actually became paul revere and yelled to reflect that fact