Senku likes that look on your face
If you had any form of parental bond with Suika, and since you knew her several years before Senku arrived in the village, she started referring to you as mama. Senku is definitely the type to refer to you in third person as mommy when talking to Suika just to see you flush because he's bored at the moment and wants to be the cause of your grey hairs coming in earlier.
"Suika, could you tell mommy she cannot be prescribing antibiotics to everyone because we are low on stock?" "asshole I'm- I'm not gonna play doctor for your stupid team if I'm not gettin paid from now"
"Such strong language. Suika, I think mommy doesn't know children are present here."
Suika, being the sweet summer child always in your support
"Senku, mama doesn't like you. stop"
"I know"
A/n: JUST TO BE CLEAR, READER AND SENKU WERE CLOSE PRE-PETRIF, AND READER JUST SO HAPPENED TO WAKE UP WAY EARLIER THAN SENKU