When Sally Clark approached her son to ask what he wanted to do to mark his 18th birthday, he had no idea just what she had up her sleeve.
In order to coincide with the year she turns 50, the pair will complete a charity skydive together.
“It is something I have always wanted to do and I have a bit of a hit list,” said Mrs Clark, from Carsons Drive in Great Cornard.
“I asked Thomas if it was something he wanted to do, and straight away he said yes.
“We will actually be doing the jump on his 18th birthday and it is Mother’s Day, too.”
While the skydive will be a memorable way to mark Thomas’ big day, the duo are also looking to do some good for charity. They are collecting sponsorship money which will go to the East Anglian Air Ambulance.
“I have done stuff for charity in the past with Race for Life and the St Nicholas Hospice walk, but I wanted to help the air ambulance this time,” said Mrs Clark, who works part-time at the Kiosk in the Borehamgate precinct and at Sudbury’s Tesco supermarket.
“So far, I have raised nearly £300 and I want to raise as much money as I can.”
The jump will take place at Chatteris Airfield in Cambridgeshire on March 30.
Mrs Clark said both she and her son, who attends Thomas Gainsborough School, were doing their best to remain calm ahead of the 10,000ft jump.
“I had my medical on Friday, but apart from that there is not too much you can do to prepare,” said the 49-year-old.
“It is simply a case of turn up on the day, go through the safety procedure and then be ready to jump.
“I have never done any extreme adrenaline sports before, so I will just have to see how it goes.”
Mrs Clark added that she had been receiving words of encouragement from colleagues and customers where she works.
“Most people have been saying how brave it is ,” she said.