"Just a Minute"

I find I use that phrase with my kids all the time...I'll get that for you in just a minute...I'll be done with this and pay attention to you in just a minute...we're leaving in just a minute.
Today we were in the car discussing how far it is from Sonic to our house (deep conversations like this often take place in our car) and Camden informed me that "Daddy's five minutes takes less time than your one minute, because your one minute takes a long time." Okay, so I guess I should watch how I use that phrase or he'll never really grasp the concept of time; I'll start working on that...in just a minute.