So it takes less force to puncture a yukkureimu's skin than it does to lift a yukkureimu. Interesting research, sirs.
Honestly, it would have made more sense for the rocket to get lodged in this idiot manjuu's insides, bounce it all over the place and burn up its beanpaste... but that wouldn't be as humorous, so let's just keep it as it is.
It takes less force to lift a bullet than to life a person, yet bullets go through people easily enough. It's not a matter of simple force, it's pressure and tensile strength and various other mechanical considerations.
Whoo physics arguments! Your second sentence is correct, though this seems less like punching a guy in the face and more like putting your fist against his face and *then* trying to swing.
Let's... not get into your first sentence. We both know it takes less force to lift a firecracker than to lift a yukkureimu.
I know; I didn't mean anything by it. It was more a response to the first sentence ("less force to puncture through the skin than to life"), which itself isn't necessarily observable from the pic.