Mirai doesn't start laughing on her end until she gets to "You used it twice" in his messages. But when she does, it's a good minute before she can start texting back.

LK: don't use a lot of faces huh?
LK: wait you just used a face!
LK: i wonder why these faces are so funny to you.

LK: i really have no idea what he could warn you about.
LK: probably the screeching. i think he said the screeching.
LK: but you've heard that anyway so whatever.

LK: there's a drink cart coming by.
LK: i'm going to have some of the food you gave me and try to take that nap.