1 definition by Lil.peep..

Theory is the most beautiful girl on the face of the earth. When people see her walk by they think, “Damn I wish I could be with her.” No matter what their sexuality is. Everyone needs a theory in their life. She is the life of the party and is loved by everyone.
Oh my, there goes theory. I wish she would be my girlfriend
by Lil.peep.. March 4, 2019