Pushy undergrads...you always get one who wants endless one-to-one attention, special treatment, advice that the others are not privy to. They are the same ones that ask if they can work extra days in the lab when the other students are not there, which seriously disrupts my PhD research cos I can't get on the instruments and they're asking endless questions...in a way I admire their motivation, but I don't like them trying to get ahead by gaining unfair advantage over the others. My colleague even had one student calling her on Christmas day asking about bloody lab work.