The TARDIS translates it into English. They speak the Queen's English so the TARDIS translates it to the Queens English for them. They understand American English, therefore the TARDIS has no reason to translate.
"LOL I love spiderman, DBZK, and Doctor Who. I don't like Batman or Superman, and I don't care about Captain America or The Green Lantern or Luke. :l" <<--- you need to have a talk about how we do things here in this Marvel fandom