The presenter shocked his co-stars with a cheeky remark to weather forecaster Laura Tobin on Thursday’s edition of the ITV breakfast show.
Ben and co-host Kate Garraway were discussing an on-air competition to win Wimbledon tickets, saying how they wished they could enter.
Turning to Laura, Ben said: “Laura’s dressed for Wimbledon today, look at you in your summer outfit and lovely bump.”
“I can’t play anyway so it’s a good excuse,” she responded.
Ben then joked: “You will be playing swing ball like you always do, so don’t you worry.”
Pointing at her bump, he added: “Isn’t that how we got in this situation?”
Quickly realising what he’d said, he added: “I really shouldn’t have said that out loud.”
Sean Fletcher also pointed out: “You said ‘we’ – is there something you should be telling us?”
“I don’t remember,” Laura joked.
Ben laughed: “That’s often the way.”
Laura announced her pregnancy live on-air last month, prompting tears from her co-host Susanna Reid.
She couldn’t resist a little weather pun in her announcement, saying: “As we head into September things will be blooming but it won’t just be my [floral] dress.
“Because I’m very pleased to let everybody know that, come the end of October, I’ll be having my own little ray of sunshine… I am having a baby.”
‘Good Morning Britain’ airs weekdays at 6am on ITV.