Stinky Finger's Mystery Guest by Jon Blake - old paperback

Age :7 +

All is peace and harmony in the House of Fun, with the grown-ups sucked up into the Spoonheads' space zoo.

But not for long! When Stinky finds a mysterious seed in the Attic of Horrors, Icky can't resist planting it. Then, events are unstoppable: Bryan turns into a girl, a helicopter arrives on the roof, and a toilet is in dire need of emptying ..