look up any word, like thot:
 
2.
when you're talking about someone behind their back and they show up
Cracker 1: "dude you know those niggers Tyrone, Jaquan and Mike Jones.... o shit hey brothas!"
Cracker 2: "speak of the devil!"
by brotha brown April 21, 2008
 
1.
Someone appears after you mention them. "Speak of the Devil" is short for "Speak of the Devil and he shall come". It was believed that if you spoke about the Devil it would attract his attention. That's why when you're talking about someone and they show up people say "Speak of the Devil".
Speak of the Devil - look who's here!
by Chicago God April 11, 2005