Whistling

[Vipsoccermaster]

I can, though it is hard. With practice, I'm sure I'll manage someday.

 

[Real Hammer Bro]

I can. But it's very hard to do...

 

[Snowy620]

I can, It's easy for me

 

[Marioguy]

I don't really know. I try to but I'm not sure if I'm Whistling. I think I can't.

 

[yoshi_7]

I can, but it's really hard for me. I guess whistling is genetic

 

[Ryan]

I can whistle and I don't get how it can be hard for you guys.