Onion sandwiches? Is that supposed to be a joke, or yet another bizarre concoction that people ate back in Steve's youth? Thor honestly can't tell; humans eat some strange things. Either way, his friend does not look like he's in any hurry to take her up on the offer, so Thor chuckles a little, taking a drink from his beer.

"I'm sure it'll be delicious," he says, in regards to the cake and its accompaniment. And then, because Steve is in a good mood and because Thor knows this Midgardian birthday tradition perfectly well, he adds, "Are you planning to make us all sing?"