Style statement?

Last few months, I am observing on the road where some bike riders, mostly young age boys, drive with a brush in the mouth. I do not know where from they start and where they want to go. It takes hardly two minutes to brush and wash. Add to this some riders will be talking on the cell phone, that is held between the head and the shoulder. I do not know how such parallel processing of driving, brushing and talking is being done by them.
I feel these people want to show their machoism by such acts ( a style statement) and may be there are some who fall for display of such acts. But, these acts can lead to other road users getting involved in the accidents as these stylish bike riders may not be able to control their vehicle properly and be safe on the road. May be the road traffic police should include driving with tooth brush also as  punishable offence.