the same person was brought in singing a Cantion of Colin's making

to zero out an array

One guy's goomar will know another guy's goomar. Sometimes the girlfriends hang out. Sometimes the girlfriends introduce each other to guys—that's often how the goomba meets his goomar, because she's friends with someone else's goomar.

He would have known the Merri well, given the affinity between boys and creeks, and he probably fished and yabbied there.