Bucky determinedly ignored that blush and how he wanted to see how far down it went. Did it stain Billy chest as well? Bring heat to Billy's skin? Not questions he should ask.

He pulled a knife from the sheath at his hip, flipping the handle around his fingertips out of habit before stepping behind his companion. This would be a lot easier to offer if they didn't have to look at each other. "Just guide where you want me to cut." He was steady enough to avoid marring Billy's skin.