Many different "Towers" out there! Is it mostly "big/fast aircraft" handed from Approach (and a radar display to help)? Or a flying school environment with lots of similar Cessnas, Pipers etc.? If in doubt you could ask one to "rock your wings". Never tried it - not even for fun. ("Rock the Tower etc....). Again with many similar aircraft at the end of the runway, you sometimes ask "number in sequence" (or similar). But you wouldn't use the word "identified". Just work your clever departure plan from that.