Colin Farrell Talks Childhood Habits With Jay Leno on ‘The Tonight Show’: ‘I Used to Pull My Hair Out’ (VIDEO)

'Seven Psychopaths' Trailer
Colin Farrell kidnaps a dog in this black comedy.
Colin Farrell’s childhood consisted of some very peculiar habits.

“I was a hair puller, I used to pull my hair out,” the 36-year-old actor told Jay Leno on The Tonight Show on Friday.

“I liked biting nails too . . . I used to enjoy the feeling of plucking hair from my head,” he added.

The Seven Psychopaths star stopped by the show to chat about his new film, but Leno made sure to probe further into the actor’s childhood, which included sneaking out at night.

According to Farrell, he used to sneak out of his home and take a little stroll.

“I’d climb into the neighborhood and walk around the streets and look into people’s windows,” he told Leno.

What else did the star share about his childhood?

As some Farrell fans may know, when the star was 17, he was approached by a scout to audition for a boy band in Dublin.

“I hadn’t finished school and I thought, I’d go along for a look,” Farrell told Leno on Friday.

“I went along . . . I went and they made me sing ‘Careless Whisper,’ by Wham! man,” he added.

The group, of course, went on to form without Farrell, and became a huge success all over the country, under the name Boyzone.

“I was dejected that I was rejected,” Farrell said of the experience.

Farrell’s new film Seven Psychopaths, co-starring Sam Rockwell, Woody Harrelson and Christopher Walken opens in theaters Oct. 12.

For more of Colin Farrell on The Tonight Show, watch the video above.