I'm not sure why guys like to carry knives around with them. But they do.
If you give a guy a knife, he'll probably be happy. He'll likely show it off to all of his friends and they'll all ooh and ahh over it. Except their oohing and ahhing will sound more like grunting.
This Father's Day, take a gander at Gerber Gear - the place to buy knives.
Consider the Freeman Stag S30V, a sophisticated knife with real deer stag grips and a sharp blade. This knife is "pretty" - if a knife can be called that. It's a tough little knife infused with class.
Box it up. Tie a ribbon around it...and he'll go wild.