your motherInformal and context-dependent: แก can refer to the listener or to another person, so this may also mean “his/her mother.” It can sound rude or overly familiar depending on the relationship.
TH: พ่อกับเเม่เเกยังไม่ได้ไปเที่ยวไหนกันเลยนะ
EN: Your father and mother haven’t gone anywhere on a trip yet.