Nah, my all-time favorite has to be from the second season (I think). Some episode where he tries to overthrow Megatron...again...

"It wasn't me, Megatron! They made me do it!"

"You're either lying or an idiot."

"I'm an idiot! I'm an idiot!"

"You're either lying or stupid."
"I'm stupid! I'm stupid!"
Megatron and Starscream