This chapter explores the communicative, spatial and institutional in-between emplacements of graffiti in conversation with Gilles Deleuze and Felix Guattari's concept of nomadology. It shows how Swedish graffiti writers relate to these in-betweennesses, through ethnographic fieldwork. Related to in-betweenness is the intervening character of graffiti. By intervening, refer to the moments when graffiti functions as disturbances of the hegemonies of the urban. This will entail a focus on what the makers consider themselves to be intervening in, why they are doing it, how they regard the city and how/if they envision other alternatives. The chapter provides an ethnographic exploration of how makers of graffiti are (de)territorializing urban space through aesthetic and spatial interventions in Stockholm. It suggests that writing graffiti can be considered performing a spatial and aesthetic politics. In terms of urban communication, aesthetic and space 'becoming-graffiti' is fundamentally subversive and exterior.