to masturbate
to mess or muck (about, around etc.)
to fuck; to have sex.
to make a temporary alteration to something, to fudge, to manipulate
A temporary modification to a piece of equipment to change the way it operates (usually away from as originally designed).
A fuck.
An act of frigging.
Dated spelling of fridge.
To stimulate someone else sexually without penetration of the penis.
To stimulate or please oneself by means of anything, not necessarily sexual, that does not get them anywhere; something that wastes their time; something that does not help others or achieve any important goal.
To stimulate oneself sexually, especially by use of one’s hand or a sex toy made for this purpose, often to the point of ejaculation or orgasm.