What is another word for same old stuff?
Pronunciation: [sˈe͡ɪm ˈə͡ʊld stˈʌf] (IPA) 
If you're tired of saying "same old stuff" and want to impress your friends with your extensive vocabulary, there are plenty of synonyms to choose from. One option could be "monotonous routine" which implies a lack of variety and excitement. Another option could be "tedious repetition" which emphasizes how dull and unchanging the situation is. "Groundhog day" is a popular phrase used to describe a situation that feels endlessly repetitive. "Rut" is also a good option as it suggests being stuck in a groove or pattern. Finally, you could use "ho-hum" which is a more casual way of saying that something is boring and uninteresting.
