I don't have the reference off hand, but I'm pretty sure in one of the episodes Apollo said "wait just a minute". I think it's in response to something Adama said in Magnificent Warriors in his office. Whoops. And they may have used years in another spot in the pilot episode as well.
Wait a minute, here's the reference:
Date: Tue, 22 Nov 94 14:56:55 CST
From:
wrwillia@xxxxxx.xxxx.xxxx.xxx (Bo Williams)
Subject: Language discrepancies
Hi all,
In the first episode, when Adama is trying to convince the Council
President that the fleet should launch intercept fighters, the
President says: "My friend, we are on a peace mission. The first
peace man has known in a thousand years." He says "years" rather
than "yahrens." Anyone notice any other instances of a character using
the regular English word rather than the correct "BSG-speak"? My
apologies if this is a recently traveled road.