Hand? Hand? What is hand? Poipoi uses his flippers to approach and sniff the hand. Once he decides it's safe, he nudges Metal Sonic's hand, then moves his head into the metal palm, clapping excitedly. Hat! Hat!
Poipoi!
And like Poipoi, Metal didn't really understand what to do in this circumstance. The Doctor wasn't really looking for animals at the moment, and Metal certainly didn't have any desire to befriend the seal...
Yet he still found it in him to take a step closer to close the gap, squat down and gently-
Poipoi does not understand concepts like annoying an evil death robot from outer space. He continues to sniff, then backs off a bit. "UAAAAAaaaa. L'egg." What he attempts to say, no one knows, but his eyes are pure, and he looks at Metal with the warmth of a child looking for a friend.
Poipoi!
Freezes up slightly, a step back taken when it got into sniffing distance.
Egg? He doesn't have any eggs.
Wait, what is he even thinking about? It's a seal, it isn't actually asking for-
Pincing his temple in self-inflicted annoyance, staring at the seal with a sidewards glance.