This is England, he explained. Tell someone it's a procedure, and they'll believe you. The pointless procedure is one of our great natural resources.

I teleported home one night With Ron and Sid and Meg. Ron stole Meggie’s heart away And I got Sidney's leg.

[Suffolk, York and Beaufort] Have all limed bushes to betray thy wings, And, fly thou how thou canst, they’ll tangle thee: But fear not thou, until thy foot be snared, Nor never seek prevention of thy foes.

The holes and burning are caused by the part diaphragming at 20000-40000 cycles/second.