This study aims to identify the predominant cognitive mechanisms underlying graffiti. The analysis is based on photographs of over 2000 instances of urban graphic defacement (i.e., graffiti) documented in major cities across Russia, including Yekaterinburg, Moscow, Saint Petersburg, and Nizhny Novgorod. Utilizing content analysis and expert evaluation methods, the research delineates three key cognitive mechanisms that contribute to the semantic unity of graffiti. The first mechanism, compression, manifests in graphic defacements through linguistic play or the transmission of discursive texts. The second mechanism, defocusing, is linguistically actualized through the technique of absurdity (everyday anchors of illogicality) and the activation of the emotion of surprise. It is noted that surprise elicits various reactions from the audience — such as loss of control, bewilderment, and uncertainty — which subsequently leads to prolonged retention in memory of the meanings embedded in the respective graffiti against a backdrop of vivid and atypical psycho-emotional states. The third mechanism, focusing, is linguistically embodied in philosophical texts.