Especially when you are indoors, either in a public building like a pub or restaurant/cafe, or in someone else's house.
Oh and did I mention the DC is very very 'busy', favourite activities at home are clambering up and jumping all over people and furniture, throwing a ball, posting anything in random bins or toilets. 
Over this winter period I either need to try to persuade everyone I know to come to my house (boring!), get soaked out in the local park, or expect everyone to put up with me being frazzled as I try to stop my DC trashing the joint and can't really have a proper conversation.
Everyone else's children this age seemed happy to sit quietly and play with exciting new toys, and read a few books, but mine just clambers over toys to reach something forbidden. Usually breakable. Unless I am just picking the wrong toys?- sob!
Any inspiration out there?