(Noun)

Definition: a period of time during which someone does not work at his or her regular job and is able to rest, travel, do research, etc.

Source:http://www.merriam-webster.com/dictionary/sabbatical

From McGrath’s “Who knows Brooklyn?”: “he was on sabbatical…it was late March and I wasn’t going to wait until September…”

It shows that Merlis is arrogant and exaggerated, since Manbeck just taking a sabbatical and it should less than five months.