Every time Ty's clone have sex with someone, the original Ty can feel it.
While Dustin and Ty were playing in the sand, 5 of Ty's are having an orgy on a bed. That's when Ty (or you know, Ty and Dustin) starts to have a boner; his clones were sexually excited.
'Hey, are you really excited to see me?' said Dustin, he giggled, rubbing the bulge, and the conjoined brothers moaned together on the sand.
'Oh gosh, I missed you so much...' said Ty while he was moaning. He missed having sex with Dustin, they look lovely together too.
'Well it's a "yes" then.' and Dustin started stroking their dick, moaning in unison.
'Almost there..... ahhhh...' and they cummed together with their beautiful cock.