Tonight at our s'lichot service (something tied to the high holy days), a fellow congregant greeted me and said "I haven't seen you in hours!". (We'd both been there this morning.) I said "hours and hours!". He complained that I was getting carried away.
I responded by saying: "hours" means at least two; "hours and hours" therefore means at least four; it's been longer than that since this morning, so "hours and hours" is not inappropriate.
It was at this point that somebody standing nearby said "oh, that's where I know you from!". We'd both been in a talmud-heavy class a while back.
There are worse things to be remembered for. :-)