...at least not according to one of this week's MN competitions 
Let Dad relax and have some fun, quality time with the kids. Grab a box of LEGO and see where their imaginations take them. With the LEGO brick you can build anything your imagination desires, as the latest TV ad from LEGO shows.
LEGO has been covering playroom floors since 1949 and today it is still the number one kids construction toy. So popular is LEGO worldwide, that there are now 80 LEGO bricks to every person in the world! Why not challenge Dads and kids to see what they could build with 80 LEGO Bricks?
To celebrate the joy of LEGO, four Mumsnetters can win a LEGO Build & Play Box. The children are going to love it and Dad's will feel a sense of childhood nostalgia as they get back to playtime basics and build with the kids.
If Dad's are after some building inspiration, check out the latest TV ad from LEGO, tissues at the ready.
I mean, really? Are single mums allowed to enter, or is having a Dad in the house mandatory?