Honestly, Wormmon is not sure what to call Wormmon's thingies, but he gets what Madoka is suggesting and sticks one out. "Go ahead."

His stomach is doing little nervous flips, but he does like being with people, and he wants this to go well! So he'll be brave for Ken-chan.

The girl eyes Wormmon's proferred appendage with suspicion, but she reaches out to take it. Lifts it up. Lowers it.

Pumps it with more enthusiasm, and looks at Madoka. "Hey, he's FUN!"

Ken's...perfectly happy not to be a part of this, but he's glad it's going well.