I asked my new gutpunching bro to test my abs and check how much I could take.
He worked over my belly with his fists, sinking in deep with each blow he delivered...
That was tough....Uuuugghhh... but..

...the poor fu*ker did not expected that I would turn the table and make him my own private punching bag :-P

I tied the guy to the post and working over his belly with bare fists while he was in standing position,
than I bust him with gloved fists while he was sitting.
The poor bastard will remember this lesson and recover his battered abs for a long time !