As it is necessary to do ghusl after masturbating. Can we do a quick one as in only wash your body quickly and come out?? Or doing a proper ghusl is necessary??
Firstly masturbation is sinful, you must avoid it and resort to lawful means of fulfilling your physical need i.e marriage.
And they who guard their private parts Except from their wives or those their right hands possess, for indeed, they will not be blamed - But whoever seeks beyond that, then those are the transgressors -
Secondly, if masturbation is done it is necessary to do proper ghusal to remove its uncleanliness. Because Islam teaches to do ghusal to remove state of Janabah.
in a state of janabah, except those passing through [a place of prayer], until you have washed [your whole body] (4:43)
And if you are in a state of janabah, then purify yourselves. (5:6)
Janabah is induced by any action which causes secretion of maniy with pleasure, including wet dream and masturbation