Why fi that?

Why fi that is an expression in Jamaica that questions why a person is doing something, usually seen as inappropriate weird or not accepted by the circle of people he/she's in surrounded by. This is sometimes the response to a situation that has a double-entendre.

Why fi that?

Last night I went out and met this catty (a girl). She made me sniff her...

The dog come 'pon me back and me couldn't take it off. (Double entendre come and cum)
Why fi that?

Why-Fi

When the Wi-Fi is so bad that all you can say is "why".

Yo, McDonald's has some Why-Fi over there. Can't even browse my Facebook feed without getting a connection error. Man.