The spelling of the phrase "gives sack" can be a bit confusing for non-native English speakers. In IPA phonetic transcription, it would be transcribed as /ɡɪvz sæk/ - the first word pronounced with a hard "g" sound, followed by "iv" as in "give", and the final sound of "sack" reduced to a shorter /s/ sound. The term "sack" in this context refers to being fired or dismissed from a job, and "gives sack" means that someone is causing someone else to be fired or dismissed.