Is it? Regardless of time or place? Graffiti
That is, the creator paints his nickname and house number on the wall and other media, and later expands it. Make graffiti on different surfaces such as cars, trains and station platforms, the wall is no longer the only medium.
Literally interpreted? "Tu" (painting at will) "crow" (generally refers to color) "Tu" and "crow" together mean to smear colors at will. Street creative graffiti is also a metaphor for something. Poor calligraphy or random writing
Looking for satisfaction? Looking for praise