Where does the ball bearing go in retractable headphones?

Try a little bit of Golden Syrup (see 'How do you remove grass stains?)
http://wiki.answers.com/Q/How_do_you_retract_retractable_headphones

Hobby weapons that simulate real guns and rifles typically fire small ball bearings, or BBs. You can build your own gun to shoot a ball bearing at a target. You will need a few common household sup... Read More »
http://www.ehow.com/how_6398013_build-ball-bearing-gun.html

Ball and roller bearing help shafts and other parts rotate in vehicle components, motors and other equipment or machinery. They prevent direct contact between moving and non-moving components for e... Read More »
http://www.ehow.com/how_8442881_tell-ball-roller-bearing-bad.html

Earthquake technology uses ball bearings to reduce friction in structures in an attempt to reduce damage during high-intensity shaking. Many experiments can be done in a classroom setting to simula... Read More »
http://www.ehow.com/list_6825467_earthquake-ball-bearing-experiments.html