Choking a porpoise

On my GP's advice, I bought some Vitamin D supplement the other day.
As befits something vaguely medicinal, the tablets come in a sturdy plastic container with a strong 'pull off' seal strap.
The pack is 3 inches tall, that's 78 mm for us remainers.
On opening it, however, the tablets barely cover the base.
There's a lot of fresh air and plastic left over. Probably enough of the latter to choke a porpoise

An aortic regurgitator laughs

Once a year, as someone with aortic regurgitation, leaky heart valve to you, squire, I have an echocardiogram to see how the leak's going.

This involves lying on my left side while a gel coated probe is pushed around my chest by the machine operator. Part way through the proc8this morning, there was a knock on the door and another operator said that one of the two other machines wasn't working correctly. Rachel, my echocardiogrammer, asked if they'd tried 'turning it off and back on again'. Naked from the waist up, with my chest smeared with KY jelly, it was hard to suppress a giggle. Maurice, Roy and now Rachel - it's a killer line, everytime.