Thanks for everything you have done to make this country better."

While many on Twitter took the cue to greet the former president (“Happy birthday former President Obama.

One of the best presidents in my lifetime!

Jen Psaki at a White House press briefing

“tweetedone Obama fan), others responded to Psaki’s tweet by commenting on her age.

One social media usertweeted, “never that.

after 28 (30 for me), one simply adds a decimal.

Barack Obama in front of the American flag

so it goes like this: i was born in 1976, which makes me 30.15 yrs old.

:) pass it on!”

My grandmother lived to 102 and it worked for her.

Who am I to say differently.

Happy 29th, President Obama!”