Voice
Voice
[Megan and Ponytail are walking.] Megan: Are you doing anything later? Ponytail: I was th- I can only control my voice once every six years. Please, you have to -inking of going out, but no real plans. Megan: ...What was that? Ponytail: Haha, what?

During a casual talk with Megan , Ponytail suddenly interrupts her normal speech stating that she is for some reason only capable of controlling her own voice once every six years. Apparently only for a very brief time since she immediately returns to the casual talk, continuing her previous sentence mid-word before being able to tell Megan how she could help her. Upon Megan's confused request, she denies knowledge of the occurrence, although in a somewhat suspicious way, using possibly fake laughter.
It could be this was just a prank by Ponytail, to tease Megan, but given her fake laughter reply to Megan's inquiry and the continuing comment in the title text it seems most likely that Ponytail is indeed possessed by some sort of entity that prevents her from expressing her own thoughts, except for a very short time every six years. Of course this may just be her way of continuing with the prank; see a previous case of such a prank below .
In case it is not a prank it would thus appear that Ponytail's usual "self" is indeed this possessing entity. Whether this entity is actually aware that the "real" Ponytail did speak, or if it actually does not know that it was interrupted (since it continued mid-word) is not clear from the last response to Megan.
The title text suggests that Ponytail is possessed by some sort of inhuman entity , most likely an alien or AI , unfamiliar with movies and eating. See below for related comics .
The comic, 1530: Keyboard Mash , also revolves around the same theme of a non-human entity trying to convince other humans that it is in fact a human. This is most clearly referenced in the title text of this comic. In Keyboard Mash, it is a spider that tries to chat like it was a human, making statements that are true if you are human, but which humans would never utter in a conversation like here - put some food in our normal mouths! However, the pretended 'human' being (the spider) is not seen by the other person in this comic. As opposed to this one where Megan speaks directly with Ponytail.
It has already been established recently, in 1528: Vodka , that Ponytail's voice can be hijacked by non-human entities. That time it was the vodka she was drinking that took over. It is possible that this is continuing or caused by the same openness to possession as shown here. It is also possible that she simply thinks possession jokes are funny and once again jokes with Megan.
Six years ago today, which according to this comic was the last time Ponytail had control of her own voice, this comic 600: Android Boyfriend was posted. Ponytail acquired an android boyfriend. It seems unlikely that this older comic has any relation with this particular episode - except that this comic mentions a six-year period and Ponytail is also in that comic.
Ponytail is mainly a filler character, showing up when two females are needed or when a large group of people are present.
It is important to note that Ponytail , like most xkcd stick figures , usually does not represent the same character in each comic. This Ponytail is likely unrelated to other instances of Ponytail.
[Megan and Ponytail are walking.] Megan: Are you doing anything later? Ponytail: I was th- I can only control my voice once every six years. Please, you have to -inking of going out, but no real plans. Megan: ...What was that? Ponytail: Haha, what?
