The situation you described does not fall under the category of physical abuse. However, it can be considered a violation of personal boundaries and a form of harassment if the person continues to touch you in a way that you have explicitly expressed discomfort with.
Physical abuse typically involves intentional and harmful actions that cause physical harm or injury to someone. In the situation you described, if the person is simply pulling your cheeks playfully and not causing any harm, it may not be classified as physical abuse, but it is still essential to communicate your discomfort and set clear boundaries.
Regardless of the severity of the action, it's essential for people to respect each other's boundaries and consent. If someone continues to engage in behavior that makes you uncomfortable after you've expressed your wishes, it is crucial to assert yourself, set clear boundaries, and consider distancing yourself from the situation if necessary for your well-being. If the behavior persists and becomes more serious or harmful, it may be appropriate to seek guidance or support from a trusted friend, family member, or professional counselor.