Hip canting into the fingers there, Cliffjumper was nontheless more busy with sputtering, especially when Optimus continued to insist on a similar vein of conversation and he finally just let his hands fall to the Prime's shoulders, digging into and around the vents there.

"It's just... uh. Kinda... Rrrr." Muttering falling into sub-vocal ranges, Cliffjumper looked away again, completely unable to actually express why it was so embarrassing to hear him say those things.

(It would've been even worse if Optimus had decided to go with actual dirty talk.)