Phrasal Verbs
to order, especially in a sudden or an unfair way, that something must happen or someone must do something The company slapped a ban on using e-mail on the staff.
to increase the price of something suddenly They've slapped 75 cents on the price of a pack of cigarettes.
to spread something on a surface in a quick, careless way Just slap some paint on the walls and it'll look fine. I'd better slap some makeup on before I go out.