Buds at the Start

After the herd meeting was over and the yoshis headed for home, Oshi began to jump up and down.
"Oshi! Oshi! Oshi!" the baby yoshi chanted.
Purpley, his mother, watched him. "It looks like he wants to ride you. But..." she looked at Luigi. "That might not be easy."
"No problem." Luigi carefully picked up Oshi and set him on top of his head. "He can sit up here. I'll just make sure to walk really slow."
"Oshi!" the baby squeaked. He liked the idea.
"He sure does like you." said Purpley. "It's pretty rare for him to talk to anyone, you know."
~paraphrased from Luigi's Adventure at the Sea

Yeah. Like Purpley Hearts Luigi, it's another cute moment in the LAS series.