see also: cheapo, a mital is a person who is often considered the most cheap person to walk the face of the earth... he can often be observed giving drop calls so as not to waste his credit. Maybe even asking a girl if shes on O2 after (somehow) getting her number so that its cheaper to call her.
Dude 1 : DUUDE why did you miss call me?
Dude 2 : oh sorry, i just didnt want to waste my credit!
Dude 1 : aah man your such a mital!