Forever Young?

Colleague: so, what were you doing before you joined our company?
Zsuzsi: well, I was studying, among other things.
C: So, you’ve just graduated from lusse (local high school). Congratulations!
Z: …….(????)……… well… that was a while ago…

Have a great Midsummer, everyone. With love, Zsuzsi (not a day over twenty plus a few more).