Eridan knew. Knew, implicitly, that Gamzee could just beat him unconscious, walking side by side like this. It wouldn't be hard.
Still, when Gamzee started walking, Eridan pressed the tip of his wand between his kismesis' shoulder blades and kept pace. At enough of an angle where it'd just wreck his prosthetic arm, of course - he didn't want to kill his kismesis - but was still a crippling blow, something awful and incapacitating to some degree that would no doubt be irritating to deal with until Equius was around to fix it. He didn't know when Gamzee would make his move, and Gamzee didn't know if he'd just decide to cheat in the adjoining alleyway, where flash stepping would be slightly more difficult, and there was something kind of fun about that.
lmfao crying at my internal clock
Still, when Gamzee started walking, Eridan pressed the tip of his wand between his kismesis' shoulder blades and kept pace. At enough of an angle where it'd just wreck his prosthetic arm, of course - he didn't want to kill his kismesis - but was still a crippling blow, something awful and incapacitating to some degree that would no doubt be irritating to deal with until Equius was around to fix it. He didn't know when Gamzee would make his move, and Gamzee didn't know if he'd just decide to cheat in the adjoining alleyway, where flash stepping would be slightly more difficult, and there was something kind of fun about that.
If Gamzee looked over, he'd see Eridan smirking.