Not a student, but an elderly PPL overheard while I was in the circuit:
[PPL] - "Tower, G-XXXX, Information B, request taxi"
[Busy controller who'd been just about to clear a 737 to land]: "G-XX, taxi S1 for 27, QNH 1024, standby for the readback"
(You've guessed what's coming)
[PPL, slowly and deliberately] - "Taxi to holding point Sierra One for runway two seven, Q-N-H One Zero Two Four, standby for the readback, G-XX"
(And the 737 PNF just had time to utter the word "Classic...." before a very late landing clearance.)