My favorite 727 moment:
One night we were headed into ORD from the southeast. There were very strong thunderstorms northwest of the field moving southeast and we were trying to beat them in. The captain got a shortcut direct BEARZ direct O'Hare. We were doing about .89 at the time. The noise level in the cockpit was earsplitting, although I was wearing earplugs as usual. I was on the ACARS almost non-stop trying to get the latest updates on the rapidly changing weather at ORD and MKE, our alternate. I'm literally screaming the info up to the other pilots so they could hear me.
Long story short, we haul ass in there and land, beating the TSRA by about 5 minutes. We pull off onto the taxiway and right away I go off onto COM 2 to verify the gate. I explained to the pilots that many of the gates were still occupied due to the weather and we would need the penalty box. The only thing was that without realizing it I used the same volume level I had been regulary screaming at them at for about the last hour (my plugs were still in). They looked at each other and started cracking up....."OK, OK, we heard ya...."

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Along the same lines, here's a 727 crew out on their layover
Engineer: "Boy it sure is windy!"
F/O: "Naw, it's not Wednesday it's Thursday."
Capt: "Yeah, I'm thirsty too let's go grab a beer....."