sometimes I amaze myself with how i maintain my cool even in situations like these:

trainee: Jonathan can you please help me prepare for the exam later? Im really nervous about it.

me: prepare? that's what we're doing right now. what did you have in mind?

trainee: i don't know... i could... call you?

me: hahaha there's no need for that. we'll be doing drills in a bit (starts to back away and works on something else)

trainee: i mean, i'd do it with my wife but she's not here.
me: you'll be fine. (moves on to other tasks)

parting thought: kung hindi ka lang subordinate lagot ka sakin.