A species of thrush, Luscinia megarhynchos, famous for its song.
The nightingale is legendary for its song.
Tom Marvolo Riddle, the Heir of Slytherin and founder of the Death Eater faction. He will either kill or be killed by Harry Potter.
Voldemort is a seriously evil wizard.
A theory about a big improbable conspiracy to keep people downtrodden/in the dark/confused/blah blah blah
A build-up plus a punch line.
Did you hear about the guy who had a suitcase full of bluebirds, bluethroats, European and American robins, nightingales, and veerys? He wound up in the doctor's office; he had quite a case of thrush.
Get a grip!
From the Gilbert and Sullivan opera Ruddigore
A: *goes on and on on some hysterical riff*
The turncoat from The Matrix,
Cypher sold out to Agent Smith for riches and power.