Fun little grammar lesson for ESL people in the last panel: "You're into tomboys too" or "You are into tomboys too" is a proper sentence with the irregular "to be" verb. It means the sentence describes something, like the sentence "you are tall"
The follow up "who doesn't" uses "to do" which is the generic for to basically every verb EXCEPT "to be". You either do something, or you are something. In English, the two concepts are very distant from each other. So here the response should be "who isn't" instead of "who doesn't". Alternatively, the following works:
"You like tomboys too" (verb here is "to like" and is not "to be") "Who doesn't?" (verb here is the generic "to do" which applies to "to like" and not "to be")
Now the
English speakers will understand the last page, but it's not just colloquially incorrect, it's actually just bad grammar, because the generic "to do" points to "to be" which never really works.