Dear Tardy TA

Dear TA who is Always Late, 

We waited for 20 minutes.  I think that’s long enough.  I hope you’re not horrible to us about not waiting the entire 50 minutes.  I like you.  I think you know your stuff, but some notice would have been nice.  Stuff happens.
See you next week, though.

Using the extra time to write this,
Peat