Someone who is really skinny and or lengthy in every way shape and form. They can be classified as So lengthy that they even look malformed and awkward in appearance.
The "sesh god" is a particular individual, usually in university or just moved out but still living on daddy's money, who goes out on the seshmost nights of the week or every night if you are a sesh lord and party's their arse off like the sun isn't going to come up.
Hey, Emma you sesh god. You comin out tonight to get smashed?