Jamal Murray melted down on the Nuggets' bench during their blowout loss Monday night ... hurling not only a towel onto the floor during game action -- but a full-on heat pack too!
The Denver superstar was seen on video committing the childish behavior with just under five minutes to play in the first half of the Nuggets' playoff game against the Timberwolves at Ball Arena.
View this post on Instagram
Clearly frustrated by being down 17 points so early in a pivotal Game 2 contest .