He might be small, but that doesn't mean that he's not going to try his best to try and pummel the man.
Which really isn't a lot, but it's the though that counts, right?
"Yield and I might let you live!"
"You little. . ." Groaning. He's pretending to be weak compared to Merry by barely using any strength to try and overpower the hobbit.
"Argh! Can't. . .-" Huff, puff. "Get you off. . ."