He is reaching out to make sure nothing is squeezing Strange too tightly. He knows the man can make himself into smoke but if this tentacle suddenly squeezed and crushed an organ he would like to not explain that to someone else later.

"Yes," he says plainly each time Strange pinches the tentacle, "I can feel everything from your fingertips to the way your coat feels." The wiggles earn Strange a tighter squeeze until it is likely hard to wiggle at all. "I don't know if that is a good or bad thing."

He would rather Strange didn't cut him but now he's curious about something else entirely as it finally lifts Strange into the air and basically holds him sideways rather suddenly, "Would it bleed at all?"