It's different, to be on the receiving end of teasing, for a change. But he can't completely bring himself to care, not when he's too busy trying to sink down onto those fingers. It doesn't help. It just makes everything build, but nothing comes of it, no pun intended. There's no relief, just sharp cries, and fluid all but splattering over Perceptor's hand.

When his wing is toyed with, in addition to the slow torture inside him, he has to duck his head down and bite the Autobot's chest plate to keep from screeching. Hot air hisses out between his teeth, and his wing jerks under the touch.

"More," he manages, raggedly, pleadingly. "I want... more."