Impulse buys off the web: don't do it
I'm a moron. I have no self-control. I am an addict.
One of those three is definitely right - and it is possibly all three. I see something shiny and new on the web - possibly a random Facebook post from a faceless company in, say, China - and think "ooh, I can't live without that."
And that is how I come to be the proud owner of a knife sharpener that has only one metal piece to sharpen the blade. The other piece came unattached and, being the size of my brain during aforementioned purchasing process, is unattachable.
Thank God for PayPal and it's refund policy.