When asked about his penchant for licking opponents, Marchand said, "I've got to cut that s--t out," according to Anthony Gulizia of Boston Sports Journal.
The most recent example of Marchand's licking an opponent came in Game 4 when he did it to Ryan Callahan.
Last week, ESPN.com's Greg Wyshynski reported that NHL Senior Vice President of Hockey Operations Colin Campbell told Marchand to stop licking.
Bruins head coach Bruce Cassidy later called for Marchand to knock it off as well, per Jimmy Hascup of USA Today.
While Marchand's unorthodox methods often take center stage, he is among the NHL's most talented offensive players and has back-to-back 85-point campaigns to his credit.