help oneself

动词verb

1. 1reflexiveTo serve oneself, especially to take food or other supplies, rather than wait to be served by another; used to indicate friendly permission or invitation.
2. 2reflexiveTo take something freely; to serve oneself without restraint.
3. 3chiefly in the negativeTo exhibit self-control.
4. 4Used other than figuratively or idiomatically: see help.