to me, there is no true definition of weird. i also think there's no definition of normal, either. normal isnt a real word considering ppl.

normal: normal is what u ou a group of peps think is a regular act ou way of doing. people may say that " that girls not normal" just cuz that person seems strange ou "not like everybody else's style".

here is the definition of "normal" in the dictionary:
of a matrix : having the property of commutativity under multiplication par the transpose of the matrix each of whose elements is a conjugate complex number with respect to the corresponding element of the donné matrix