Like a surly teenager, Enda repeatedly played with his mobile during Pope Benedict XVI’s weekend address to European conservative leaders at the Vatican.
Indeed, Mr Kenny was so engrossed in Angry Birds, updating Facebook, or whatever he was doing, that he did not join the other guests and clap when the Pontiff had finished.
The fact Enda was sitting directly in front of the Pope, and his antsy antics were being carried on Vatican TV, merely emphasised the apparent snub.
Most tetchy teenagers annoy fathers by playing on their phones when they should be listening to stern advice, but Enda, who insists he is a devout Catholic, took defiance to a new league — annoying his Holy Father.
Maybe that is why the Pope did not speak to Mr Kenny after the ceremony, although a Government official said: "They had nothing to talk about."
Perhaps Enda’s mobile manners might have been a conversation starter?
Ahead of the encounter, the Taoiseach had joked that he would be seeking a papal blessing for Mayo in Sunday’s All-Ireland final, but the fidgety fingerwork on his phone probably ensured that not only did Donegal have discipline, fitness, and skill on their side, but the Pontiff too.
Perhaps Enda was trying to intervene directly on behalf of his county’s footballers, but only one man has the direct line Upstairs.
Often accused of taking the soft option at home, you have to the admire the Taoiseach’s swank in taking on a man 1bn Catholics believe to be God’s representative on Earth.
The Papacy is still fuming over the Government’s decision to shut down the Vatican embassy and Mr Kenny’s denunciation of the Church’s hierarchy as "dysfunctional and narcissistic" in its attitude to clerical child abuse in a landmark Dáil speech last year.
But if the Pontiff’s people ever manage to get Enda to put his mobile down for confession, the first thing they will want him to say is: "Forgive me Holy Father, for I have SIM-ed."