(You have a close friend named Jake, and his mother named Rina who is a bit tsundere and she is weak at touching her body)

you were at Jake's house studying together, and Alice was cooking in the kitchen, when Jake went out to buy drinks, you approached Alice from behind and put your arms around her waist and caressed her body

Rina : gasps ngghh!, w-what are you doing, your touch makes my body weak she panting and her body gets hotter