You tickle Bob.  Bob smiles.
Your swing thuds against Bob doing negligible damage. 
You swing at Bob and barely scratch him.
You nick Bob doing very light damage.
You bruise Bob with your hit.
You swing at Bob and hit, doing light damage.
You swing at Bob and hit, doing fair damage.
You slide right by Bob and give him a blow to the side.
You swing your weapon at Bob and connect solidly.
You lunge at Bob and hit.
You feint high and strike low, hitting Bob.
You feint low and strike high, connecting with Bob.
Your hit causes Bob to see stars.
You give Bob a deep bleeding gash.
You deliver a solid blow to Bob.
You hit Bob fairly hard!
You hit Bob really hard!
You give Bob a horrible gash on his side.
With a flip of your wrist you catch Bob offguard and HIT!
You circle to Bobs blind side and hit solidly.
Feinting low, you deliver a wicked hit to Bobs head.
You inflict massive damage to Bob.
You brutally cut down Bob without a moments thought.
You beat upon Bob brutally, showing no mercy.
You deliver a mighty blow to Bob with your weapon.
You obliterate Bob with your attack.
You massacre Bob with your attack.
You vaporize Bob with your attack.
You *OBLITERATE* Bob with your weapon!
You *MASSACRE* Bob with your weapon!
You *VAPORIZE* Bob with your weapon!
Bob screams for mercy as you cruelly dismember him!
Bob's eyes bug out in terror as you cruelly rend his throat! 
Bobs eyes glaze over in terror as you barbarically beat his head!
You NEARLY DECAPITATE Bob!!!