[Sorry Squirrel Girl, Cosmo isn't familiar with like 99% of Earth Heroes. He has no idea who the heck you are.]
<You are.> [There's a small, mental laugh that follows his little joke. Sometimes Cosmo thinks he's funny.] <Please excuse cosmo, but... do you know what planet we're on?>
[There are probably better people to ask than the weirdo dressed as a squirrel, but Cosmo's already talking to her, and it's not like he can't ask someone else later.]
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<You are.> [There's a small, mental laugh that follows his little joke. Sometimes Cosmo thinks he's funny.] <Please excuse cosmo, but... do you know what planet we're on?>
[There are probably better people to ask than the weirdo dressed as a squirrel, but Cosmo's already talking to her, and it's not like he can't ask someone else later.]