This Phrase is a combination of the well renouned word "wank" which means to jerk, as in jerk off. An
chariot as in a most prestigious form of transport/recreation, like a bed or public transport. With linking these two words you can come to the conclusion that
wank chariot is a place where you can go an feel like a king an more powerfull whilst you enjoy a fine
masturbation marathon.
"Sorry guys I can't come out for a drink to tonight, I am going to my
wank chariot for a quick couple then going for an early nights sleep"
"
there is nothing like
going home to your own wank chariot"