Olamba is a pashto word which means "Bath!" or "Take a Bath!".It is used to address somebody and its verb is "Lambal" which means "bathing".
It can be used and considered offensive in a
slang way as it means to TAKE A BATH(after sexual intercourse).
Also its now too
common in informal pashto and is an offensive word to
tease somebody!
"Olamba! che yakh shay" means "Take a
bath! so you cool down" or "Take a
bath so chill out!".
"Olamba!" can be formal to address somebody to take a
bath.OR it can be offensive depending upon the situation.