Ahem. Mathemagician.
And I don't see this as being my dislike for Fanon! Trixie manifesting itself (Fanon! Trixie, who is 90% of the fanfiction output, who is more or less an OC). Show Trixie I like well enough, just get annoyed at the overexposure. I'm just seeing this sort of "too cool for school" attitude as being very much in character for Trixie (if you assume that she is her show persona, as opposed to the theory that she's more humble and normal off stage.)
The "eating her neighbor's paste" thing was just appended silliness, like the sort of thing that kindergartners actually do.