It means that you shouldnt take atvantage of your lunch break and take a long tme that you should oniy take the time that they give you for your lunch break bcause they said if they catch you taking more time than you ussually take for your lunch break when they catch you doing that they said that they will fire you from your job and you shouldnt take things that are just sitting right there and just because you think that they are not going to use them you shouldnt take them from your job