It must depend on which muffs one has.
The Givi ones I have don't close when one takes one's hands out.
The scenario described hasn't occurred for me in many years of using them.
Mike
Honda Forza 350 - Adso
Honda Vision 110 - Bright "Ignorant people will always be afraid of what's different and will always mock what they don't understand."
Capitano
Proud to be a member of the Ugly Bunch