Transcript:
Paige: Jason is so annoying! I cannot wait until I'm 18 and can move out of the house! Andy: Page, I'm sure that by the time you turn 18, he'll have mellowed somewhat. Jason: Prepare to do battle, o pimply one. Paige: Wanna bet? Andy: OK, mabye 19...
If you read the very first FoxTrot Strip, it has Jason in this exact getup, saying to Rodger: Prepare to do battle, o balding one!