From the NannyMUD documentation

LAST CHANGE

2000-12-15

FUNCTION

NAME
        set_wet - Make a living wet.


LOCATION
        /obj/living_functions.c

SYNTAX
        varargs int set_wet(int time)

DESCRIPTION
        With this function you can make a living wet for  seconds. The
        argument is added to the current wet-level. There are two limits on
        the wet-level: you cannot be more dry than dry, nor more wet than a
        certain amount (at the time of writing 10000).


RETURN VALUES
        0 - Living could not be wet (has "never_wet" property)
        (Non-zero) - Success


NOTE
        Note that all objects that the living is carrying also
        become wet, ie set_wet(time) is called in them.