That’s the tea sis Share definition Flag 1. A way to conclude telling someone some gossip/ some tea. It can be said to either gender despite the word ‘sis’. 1. ‘And then Kylie caught them in the act!’ ‘Wow, the kettle is boiling.’ ‘That’s the tea sis!’ That’s the tea sis by lileilish June 9, 2019 0 0 Get merch Get the That’s the tea sis mug. Buy Now — $32.95 See more merch