Helmet Teacher. Noun
Origin: from certain schools in Bhaktapur.
A part-time teacher (sometimes, also a tuition teacher) who practically works in over a dozen schools, scurries from one school to the other, taking one or two periods. To aid him (it’s usually male teachers) in this extraordinary (lucrative) feat, he has a motorbike or a scooter. He rushes to the classroom, habitually forgets to take the helmet off. It does save him some time though, by not taking it off. He is in and out of the school like the superhero Flash. In short, he is a hustler.
Interestingly, a helmet teacher has a better income than the regular full time teachers. And evidently, a helmet teacher suffers from an almost-zero-social-life-disorder.