[It doesn't help that his spine is more comfortable going side to side, either. He can curl up to an extent but it's just not what his body likes doing. It wants to wiggle.]

Well, if I had to estimate, we match up well-enough lengthwise that if we were to position ourselves carefully there'd be no trouble at all reaching each other.

[Like... he's bad at social situations and all but he does at least know you don't try and go balls-deep the first time you meet someone in-person. At least, not when they're in a body they aren't used to and clearly still getting a feel for sex in general.]