The act of driving slowly in your vehicle whilst a prostitute outside the vehicle
trods slowly adjacent to your window holding onto your manhood; preferably stroking
ex 1: Johnny had mixed feelings regarding his first prostitute experience and even more so about letting the street walker into his vehicle, so he politely suggested she try a Walkabout
ex 2:"Hey bra, I went up to the red light district for some nookie and this bad bitch wanted it, but I knew she wasn't clean. Treated that bitch to a Walkabout."