Not Too Terribly Long

1. Taken at face value, something that's not too terribly long, like drinking a Capri-Sun or something

2a. Anything that you could do in less than 21 seconds with a group of up to 7 people, yourself included, most likely a spontaneous and satirical musical number parodying those longer, drawn out anthems everyone else has

2b. A Phineas and Ferb reference that is also not too terribly long

"And it's not too terribly long." - Final line of the Fireside Girls Anthem, which is both self-referential in nature and silently judging the real-world Girl Scouts whose anthem is, in fact, far too terribly long.