"not just big noting it"

[lukre]

A: He gave me a penicillin.
B: Well, if he's not just big noting it, you'd better see if you can get enough for two.

Can someone please tell me the meaning of this (the bold part)?
Thanks a lot!

[Anglika]

Both sentences are ungrammatical, and the second does not make sense. I would say they should be:


A: He gave me penicillin.

B: Well, if he's not meticulous about recording it, you'd better see if you can get enough for two.

[lukre]

Thank you Anglika!