Sines and portents

It's not that the pun below is world-class, or anything -- what I like about it is that I came up with it *while dreaming*, and was amused with myself before I woke up. Not too bad for REM sleep...

In my dream, Albus Dumbledore was producing an enormous batch of tea for some potion or another, using several teapots bigger than my head. I strung some tubing from one pot to the next, fussily explaining to Dumbledore that the angle of the tube was critical, and that he "shouldn't steep it too much".