He knows he's a dad when...

... He gets a good telling off for singing the right words to a song...

He knows he's a dad when...

... Christmas Eve consists of reading a rather marvellous pop-up version of 'Twas The Night Before Christmas' and constructing large garden toys...

He knows he's a dad when...

... He starts devising snowman mythology...

He knows he's a dad when...

... He fashions a special 'snowman making tool' and then spends 90 minutes utilising it...

He knows he's a dad when...

... He finds he has added a 'Wireless Weather Station' to his seasonal wishlist...

He knows he's a dad when...

... He now has to serenade spiders as he puts them out of the window...

He knows he's a dad when...

... He can satisfyingly answer the enquiry, 'What noise does a moose make?' with an low, yet authoritative, 'MOOOOOOOOOOSE!!!'

He knows he's a dad when...

... He doesn't need an alarm clock any more!

He knows he's a dad when...

... He finds himself considering holding a 'bath-toy amnesty'...

He knows he's a dad when...

... He finds himself in a bathroom full of bubbles halfway through taking a shower...

He knows he's a dad when...

...He finds himself washing up and planting empty shampoo and conditioner bottles amongst the detritus around the edge of the bath...

He knows he's a dad when...

... His shopping list comprises of 'size 9 slippers' and 'small white butterfly sunglasses'...

He knows he's a dad when...

... He has to make an emergency run back to the house to find a frog...

He knows he's a dad when...

... He tries to accurately record the words "m'numb-a-numb" and "jerbajer"...

He knows he's a dad when...

... He develops an intense dislike of all small, awkward fastenings - be they pointlessly placed poppers, or fiddly unnecessarily small buttons...

He knows he's a dad when...

... He discovers he's been carrying small plastic lemons around in his pockets all day...

He knows he's a dad when...

... He starts re-designing baby clothes in his head...

He knows he's a dad when...

... He hears a little voice over the intercom saying, "Duck, duck, duck, duck, duck, duck, duck, duck, duck, duck..."