With this clarification, Lucius opens his mouth just enough to ■■■■■ his jaw forward and position his teeth underneath his lips. He tightens his top lip into a similar position with those teeth and then, still keeping jaw slightly extended, brings his mouth back to a close. Essentially sandwiching his lips inside his mouth, making a “-_-” face while thinking this over, head slightly tilted. Even crossing his arms by slipping the arm into the opposite sleeve at some point during this process.
“Could I have a list of what chemicals and stuff is used for the room cleaning?” Lucius eventually asks.