. . . you and the lady at the counter pick up 
gifts for each other when you go on vacation.

or:

. . . your old post office calls ahead to your 
new one to let them know to be extra careful of 
those flat packages. *^_^*

and:

. . . your new post office starts carrying double 
their previous number of IPMOs at their counter.

not to mention:

. . . you go to cash a money order and the clerk 
just writes "known" instead of asking for your 
driver's licence number.

but funniest:

. . . you go to a *different* post office from 
yout normal one and it takes you a second to 
remember *why* they don't know you on sight. ^_^;;

Many Sharp Smiles,
--Drac