A man walks into a fly shop and asks “Do you have any whatchamacallits?”
The kid behind the counter points to the bin. “They are the hot fly this year,” he replies, but selling is unnecessary.
“We were killing ’em on whatchamacallits last Saturday. Best fly ever! I need a bunch more,” the man declares.
Fast forward …
The man is standing in a quiet pool, a whatchamacallit on the end of his leader. He spots fish, but the action is slow. He can’t quite figure it out; meanwhile his buddy is standing one pool up, and catching a few.
The man asks his friend what he’s using. The friend replies “chartreuse bead.” He looks down at his box; an ample supply of whatchamacallits peers back. “Can I grab one of those from you, buddy?”
That set of circumstances may or may not be based on actual events, regardless of specificity as to actors, but an intuitive punter would wager on the former.
Did the man originally “kill it” because of the fly, or because of external factors beyond his control?