Culture and Gestures Birthday Suit Posted September 7, 2015February 25, 2020 Evil Birthday Suit = naked, wearing no clothes Ex: Sorry I can’t open the door right now. I’m wearing my “birthday suit.” Ex: I had a dream I went to school in nothing but my “birthday suit,” and everyone was staring at my naked body. BACK to Slang Open modal× Become an Evil English Member! Try it FREE for 1 month! Click here to learn more