Fists in a Knife Fight (3.5e Maneuver)

''Your enemy swings at you and misses. You grab their weapon out of their hands, spin around, and stab them with it.''

When an opponent misses you with a melee attack while standing within your natural reach, and you have enough empty hands to hold their weapon, you may initiate Fists in a Knife Fight.

You automatically disarm the attacker of the offending weapon, and may make a free attack against them with it.