Mothers are bombarded with around 300 questions from their children on a daily basis, with girls being the most inquisitive lot, a new UK study has found.
The study of 1,000 mothers discovered girls aged four are the most curious, asking an incredible 390 questions per day - averaging a question every 1 minute 56 seconds of their waking day, 'The Telegraph' reported.
From breakfast in the morning at 7.19 am to tea time in the evening at 7.59 pm, the average mum faces a testing 12.5 hour day of questioning - working out at one question every two minutes 36 seconds.
It is during meal times when most questions are asked, young children rattling off 11. This is closely followed by a routine trip to the shops, prompting 10, and the reading of a bed-time story, which typically results in nine.
A whopping 82 per cent of toddlers apparently go to their mothers first rather than their dad if they have a query.
As many as 24 per cent children said they go to their mother first if they have a question because their dad will just say 'ask your mum', the report said.
The most difficult questions kids ask their mothers include 'why is water wet?' and 'what are shadows made of?'
Other, more awkward, queries include 'why do we have to go to school?' and 'why are you so old?'.
In all, a mother's knowledge is in such demand they get asked around 105,120 questions a year by their children.
The study by online retailer Littlewoods.Com found the amount of questions asked by children differs with age and gender, four year old girls being the most inquisitive.
On the other hand, nine-year-old boys seem to be more content with their knowledge, asking 144 questions per day - one every five minutes 12 seconds.