True, It happened around 95. Big did a show in Detroit & Em was backstage trying to give him his Demo tape (Em was wearing that Elf T-Shirt that you probably saw him wearing in one his old pictures [The one where he is picking his nose I think]).
Em saw a Twinkie on one of the tables & grabbed it, not knowing that this was Bigs last twinkie. When Biggie found out, he went banans & almost got his people to fuck Em up.
Later on Em & Big dropped a couple of diss tracks directed at each other.
Em dropped "I Ate Your Twinkie" & "I Ate Your Twinkie (Remix)"
Biggie dropped "You Elf T-Shirt Wearing Square" & "High Pitch Sounding Sausage".
The Em tracks were on a mega rare Detroit compilation that was only released on Tape, while the Biggie diss tracks were released on a NYC mixtape around 95.