Tips needed

Cailey
I have always been a super kinky person, my SO has never really explored the whole BDSM world, so over the past year I've been slowly introducing him to new things. Something he isn't getting is how to role play. I've explained it numerous times and have tried to start it, but for some reason he isn't catching on. I'm not talking the whole make out, touchy stuff. I'm talking teacher and student role play.  How can I explain this to him so he will actually catch on?