The side effects of two potions taken at the same time caused Techno to go deaf for two weeks and in those two weeks Philza and him developed a system. A tap on his left shoulder, tucking hair behind his left ear or touching the left side of his face meant yes. A tap on his right shoulder, tucking hair behind his right eat or touching the right side of his face meant no. Due to Tommy, when the effects wore off and Technoblade could hear again, the first thing he heard was fireworks and he panicked for an hour straight. He soon developed the ability to block out all noise whenever he was overwhelmed and Philza and him still use the system to communicate.
