My DD is 21 months old and has always been pretty good when it comes to nappy changes. But recently it's as if she's a child possessed if I even mention changing her bum!!
I started to think maybe she might be getting ready to potty train, so we do have a potty that's kept in sight and she does do the odd wee on it, but we are still relying on nappies mostly. When she's just got a wet nappy, the fighting isn't so much of an issue because if she escapes, she can't really make a lot of mess. But when she's done a poo, she is adamant that I am not changing her nappy! Kicking, screaming, running away....so I've resorted to bribery using miniature haribos 
one sweetie if she lets me change a poo nappy any tips on what I can do?! Or should I just keep using the Haribos? She only poos once a day, so its not like she's being bombarded with sugar - but I'd rather not have to bribe her!