Stoner's Tic
Physical gesture used by a stoner to communicate his desire to depart the gathering and light up. This gesture usually includes making eye contact with another stoner, raising the eyebrows, and jerking the head in the direction of the exit. This simple series of movements is a clear signal to the other stoner saying, "I have weed, would you like to go out front and smoke it with me?"
I told my five-year-old we were leaving the party, but then Tony gave me the stoner's tic and we wound up staying another hour.