A wry smile from the right-winger on the 3M Line.
"Seems like every team comes in here after being smoked.
"But Boston's one of the best teams in the NHL right now. That's no secret. That line (Patrice Bergeron, Brad Marchand and David Pastrnak) is one of the most dangerous around.
"So, a big challenge for us. They beat us at their rink a few days ago.
"We owe them.
"We've got to make sure we give it right back."
With Frolik and Co. still smarting from a 6-3 ruffling by the visiting Florida Panthers on Saturday evening, that dreaded first-game-back-after-a-long-road-trip scenario, the Bruins opened a five-game junket the same night by being well and truly trod upon, 6-1 by the Canucks in Vancouver.
Hence, mutual surliness.
The B's, of course, inflicted one of only two losses on the Flames over a highly-successful six-game trek away from the Scotiabank Saddledome, 5-2 at TD Bank Garden on Feb. 13.
"Oh, we know what's coming,'' said defenceman Michael Stone. "It was a good game but we had a few minutes where we didn't play our best and they took advantage. That's what strong teams do.
"Boston comes right at you. This is gonna be playoff-style hockey, right? And that's what you want this time of year because that's how, more and more, you're going to have to win.
"So you have to prepare accordingly. It's not going to be the fancy plays at the blueline, the tic-tac-toe goals, that are going to help you be successful.
"That's what we have to be prepared for."
Despite two losses in their last three games, Bruins are 7-3 over their most recent 10 fixtures, an enviable 16-6-4 away from home and a +47 in the goals for/against department.
"The other night we felt we played 35 good minutes against them,'' reckoned Flames' head coach Glen Gulutzan. "But that's not enough against a good team.
"We challenged our guys to go 60 good minutes the next game against another really good team in Nashville. And they did it.
"It's no secret that you need to play 60 strong minutes against good teams."
The Flames will also look to improve their home record, which sits at 13-14-3.
"I think it's a mental thing,'' said Frolik. "We looked at the stats: We out-chance teams here, we outshoot them, we play well in stretches but too often we still find a way to lose the game. We give up a goal late in a period or in a period, can't score the big powerplay goal at the right time.
"It's frustrating but we've got to keep at it."
