The phrase is written in the Latin chat alphabet common online, where 3 stands for the Arabic letter ain and 7 stands for ha, which is why it appears as ya39oubi ya ta77an. Clips with this spelling circulate on soundboards and in short audio shares across North African communities. Its popularity comes from the exaggerated delivery rather than a known film or show, so it survives as a portable roast sound that people recognise instantly from the first syllable and reuse whenever a teasing callout is needed.