The club captain jested that the forward was fortunate that the Bavarians did not stage a comeback in the DFL-Supercup and was thrilled with how his final game as captain went
The forward scored the second goal for BVB in their 2-0 DFL-Supercup win on Wednesday, netting midway through the second half to add to Henrikh Mkhitaryan's opener and celebrating in memorable fashion by pulling out a Spiderman mask.
Although his goal celebration at Signal Iduna Park was largely seen as amusing, Kehl conceded it would have been awkward if the Bavarians fought back to beat BVB.
"That was a funny celebration by Aubameyang," Kehl told Ruhr Nachrichten after the win. "I did not know he had his mask ready to pull out if he scored.
"It's lucky for him that we won, though - we would have beaten him up after the game otherwise!"
Kehl, who is retiring at the end of 2014-15, was captaining Jurgen Klopp's men for the final time in the Supercup win and he was delighted to end his spell in charge on the pitch on a high, particularly in light of Sunday's friendly defeat at Anfield.
"This departure was significantly nicer than it would have been if I had not captained BVB again after the 4-0 loss to Liverpool," the 34-year-old said. "I was pleased to be able to captain the side once again while also celebrating the title.
"Leading the team into Signal Iduna Park one last time ... That was a special moment for me. I enjoyed it very much."
Despite the joy of conquering Pep Guardiola's team in the Supercup for a second successive season, Kehl conceded that the victory will have no bearing on the Bundesliga and demanded they knuckle down to take the title back off Bayern.
"For this victory we'll get no points in the Bundesliga," the midfielder continued. "This game was not played at the standard to which both teams will be aiming for this season.
"Dortmund are on a good path. We have had a good pre-season, if we exclude the Liverpool loss last Sunday. Of course we have ambitions, but so do Bayern.
"We will try again to play a solid season, just as we have always done it in the past few years. This has served us well."