A young British mom had a pretty traumatizing experience when she noticed her baby had a HUGE HOLE IN THE ROOF OF HIS MOUTH.

Becky Stiles, 24, told the Sun that she saw a large dark red "hole" in the roof of 10-month-old son Harvey's mouth as she changed his diaper.

Stiles recalled that the incident left her "shaking, sweating and holding back the tears." She tried to touch the hole but the baby screamed when she got near it.

Her mother told her to rush Harvey to the hospital right away, so they dropped their two eldest children off with their grandparents and high-tailed it to the nearest ER.

Once they got the hospital the staff was ready to take him into a specialist, however, a nurse shined her pen flashlight into the baby's mouth discovering that the hole was in fact ... a sticker.

A sticker!