ready for lessons any time!

yeahbut®

how do I just know you'ld be regaling me with interesting facts about the sinusoidal patterns of waveforms in a restricted vessel or some such thing?

Perhaps fear, like the Porter's drink, is an equivocator:

Lechery, sir, it provokes, and unprovokes;
it provokes the desire, but it takes
away the performance: therefore, much drink
may be said to be an equivocator with lechery:
it makes him, and it mars him; it sets
him on, and it takes him off; it persuades him,
and disheartens him; makes him stand to, and
not stand to; in conclusion, equivocates him
in a sleep, and, giving him the lie, leaves him.

specially fer yuw, J! ;)