Sentence:  From a very early age, my elder grandson took to calling the remote control for the TV the ‘<WSD>doofer</WSD>'. He didn't come up with the name himself. It was the name his parents used, and he just picked it up – the name, that is, not the <WSD>doofer</WSD>. Actually, he became very adept at negotiating his way around the <WSD>doofer</WSD> and even had to teach his grandfather how it worked. But then, children pick these things up very quickly – like the <WSD>doofer</WSD> "and" the way it operates. "Our" <WSD>doofer</WSD> is always getting lost. It's never there when you need it, and it's always somewhere you don't want it to be – ... 
Meaning of the word marked with <WSD> tags:  The remote control for a television.