Classic line from ghostbusters from the 1984 film about three eccentric new york city parapsychologists turned ghost capturers written by co stars dan aykroyd and harold ramis and starring bill murray not official merchandiset shirt design reads dont cross the streamsour crew neck short sleeved mens t shirts are 100 premium cotton in a soft pre shrunk jersey knit our womens t shirts are lighter weight 150g tees made with deluxe 30s soft style yarns for a soft feel