Vask didn't offer any resistance to her as she slipped from the chair, and his hand, to get closer. In these tight quarters aboard the vessel the shobhad was very limited in his own movement. He could sort of stand in the cockpit but it require him to hunch over heavily, looming over his station and resting some of his weight upon it to offer him support. Actual fucking on the bridge was just not happening, at least not anything that would require him to be thrusting. This meant that, as much as he preferred it the opposite, Gabby was going to have to show the initiative her and put in most, if not all, of the work.
As she got nestled in between his thighs, thick and meaty enough to easily block out the majority of her frame from any onlookers, she'd find that his pants weren't exactly jeans; which was to say they weren't a form of denim specifically. The material was a thick and durable brown fabric, though showing signs of wear and tear to say that it wasn't new, but the design was otherwise simplistic and foreign; a far cry from the fashionable sensibilities of most people in the pact worlds and entirely lacking pockets of any kind.
When she reached up to unfasten the waistline she'd find no zipper, instead a pale green metal clasping mechanism sat just behind the fabric at the top and, once she unhooked this, the seam of where a zipper would be instead came apart as if nothing was holding it together before this point. Despite the relatively tribal design of the pants at large Vask had sprung for some oddities when he bought them, mainly some inubrix lining at the groin which wove together while the clasp was in place but split apart when it was opened and the pale green clasping itself was magic-resistant noqual; specifically because of a frustrating encounter he'd had with a spellcaster dropping his trousers during a conflict. Still, whether she recognized the source of these oddities was hardly important compared to the prize she sought within said pants.
Vask was not wearing any form of underwear. He didn't understand the obsession truly, finding them generally impractical. Of course, lingerie he accepted as a means of enticement but that was a different story. He shifted a little to aid her progress in revealing himself to her and she'd find the outline was not misleading. As a shobhad, Vask's genitals were not so different to most other humanoid races overall but the somewhat darker gray skin was perhaps thicker than was common from others. He possessed no body hair but the wrinkles of his flesh were more pronounced and notably, especially upon his shaft.
His cock was laden thick with the equivalent of foreskin which swallowed the head of his member entirely from view in his flaccid state but, more interestingly, the skin pushed outward and formed rings around his manhood that grew more prominant the closer to the base one looked. While these rings were somewhat soft enough to offer some give, they ultimately remained firm enough to provide resistance; a natural equal to some types of silicone used in dildos and other sex toys and certainly 'ribbed for her pleasure'. These rings did disappear entirely for the last third or so of his cock, so perhaps that was more incentive to try and accomodate as much of his length as possible. With his flaccid length being generous enough for more average-sized races to sport when erect however, that was likely more easily said than done. "No chance you can take the whole thing... but you are welcome to try anyway. If you were expecting me to rail you though, well, that's not happening now. One of us needs to remain aware enough to respond if any alerts come up on the systems and I can hardly move in this place."