today years old

Adjective

 * 1)  One's current age (to the day).
 * 2) * 2018 September 1, Spohr, Mike, “19 Mind-Blowing Things People Learned When They Were "Today Years Old"”, in , archived from the original on 11 August 2020.

Usage notes
Almost always used when humorously discussing information one just learnt, as if referring more traditionally to the age in years at which one learnt it.