Sponge Thelma

"Grandpa, do you like SpongeBob?"
"Oh yeah, he's a sponge. That's cool."
"Grandpa, do you like his friend Patrick?"
"Oh yeah, he's a starfish. He's cool."
"Grandpa, do you like his other friend Thelma?"
"Thelma? Isn't that your Grandma?"
"Oh yeah, that's right....she's our Grandma."