Traders may be pulling an old play out of their playbook, loading up on Super Bowl-related stocks Buffalo Wilds Wings (BWLD +3.3%) , Domino's Pizza (DPZ +2.1%), and Papa John's (PZZA +1.1%) in front of the game. The adage is that when the firms report the number of pizzas or chicken wings they sold during Sunday the staggering figure will be good for a slight bounce for share prices. A promotion for Papa John's over the SB coin toss will be closely watched in particular, with analysts busy trying to figure out the impact for Q1 (free pizzas) and beyond (boosted social engagement ).