You've grown up being told having a paci is "shameful" but in Ranboos eyes, your 'little' mind set is absolutely adorable, so he allows you to stim. Wich you said "you don't need", so you, Tubbo and Ranboo are hanging out, and your fingers start tapping against the couch, Ranboo chuckles, thinking "huh 'don't need to stim' little liar just admit you Iike to stim", and thenly Tubbo says

Tubbo: "Yeah, no, I hate when people without diagnosed anything, stim, like c'mon, they just want attention"