While I was waiting for departure clearance, a student pilot was departing on a parallel runway and was cleared to cross my intended departure flight path. Concerned of a possible collision, he was maintaining healthy climb.
"Skycatcher 12345: While your climb performance is impressive, I would remind you that Class B Airspace starts at 3,000 feet."
[A long silence followed.]
"Skycatcher 12345 leveling out at 2,500 feet."