The fact that Terry actually IS Bruce's son via DNA manipulation hijinks courtesy of Cadmus just makes it better.

"I can't believe I was ever this soft. This is how you find out someone's Stand ability."
…
"And we've got about fifteen or so active Stand users all around Morioh. I don't know where the serial killer is. He just wants a quiet life! He spends his time going on 'dates' with his 'girlfriends'. And that's everything I know!"
"Everything?"
"I stole my dad's wallet to buy some mahogany from Honduras to make the body of my guitar."
"Losing my patience."
"I can't control my old man here much longer. You better give us something we can use."
"His wife! I know where his wife is!"