Ahahaha, sometimes we are soooooo extremely bored on lectures, that we take pictures just in front of lecturer during lessons :)
Of course it's so disrespectful and it describes us as  rude people and people with awful behaviour. But sometimes it gets so unbeareable, I mean to listen about history of some small asian provinces in 13th century or about agriculture of Ancient Mesopotamia or whatever, so we try to make this process little bit more fun. So, there is result of our bad manners ahahaha

 Maria wants to look like a duck ahaha. Love her :)