Went out drinking and smoking shisha for a night, no accidents or injuries happened... It might be relevant that is in a super hot and super humid area. The next day I woke up with head pain from the outside, like when the hairs move, the head hurts, seems swollen, and the day after I realize my parotid gland is swollen. This happened so rapidly. No fever, no flu symptoms, mouth not dry, and no lymph nodes swollen as far as I can tell.