To Testa's credit, he did in fact know the song, strumming the tune from Springsteen's 1973 debut album Greetings From Asbury Park and even sharing the mic with the musician at some points.
While the teenager was missing school, he still learned a lesson - in rock and roll, that is.
Springsteen took the opportunity to educate him on the stage, saying, "Before we continue, a lesson.
"When I was your age, I brought my first guitar, and I realised, it wasn't how well you played it, but how good you looked doing it," the 67-year-old musician said. "So I go in front of the mirror trying out different poses."
For the full effect, he then struck several of his iconic rock and roll poses in front of the enthusiastic crowd.
With a story like that, one can't imagine Testa's teachers will be too mad at him for skipping school.