Imagine rodimus being so overcome with the effects of his heat that he can get excited from almost anything. Megatron accidentally brushing his back with his hand? Boom. In the middle of a meeting and just getting a glancing thought of being rammed by a girthy spike? Bam. Moving out of his seat wrong? Pow. Immediate I'm-ready-to-get-pounded mood.
Poor Roddy, his libido is just COMPLETELY put of damn control. And of course he doesnt wany anyone to KNOW what's going on and he tries to hide it but just gets into too many embarassing scenarios. He cant look Megatron OR Ultra Magnus in the eye without wanting to jump either of them-