Rule 34 Dev - 2boys alien alien_genitalia alien_humanoid alien_penis bottomless diphallia diphallism gay homestuck homestuck_troll horn horns humanoid karkat_vantas male male_focus male_only monochrome multi_penis penis reddenedrain shirt shirt_only short_hair short_hair_male shorts sketch sollux_captor squatting sweater t-shirt tentabulge tentacle troll tshirt yaoi|12165712568