Presentation sucked big time!

This morning's presentation for "Consumer Behaviour" sucked big time man! I never had a lecturer interrupting the presentation to comment about a student's work. Where got people say that what you are presenting is wrong in your face one??!! and tells the class that this is not the right way to do it.. 他妈的!! this is not right loh.. even though we were given an extra mark for being the first presentation, also not right to use us as guinea pigs right?!! 超极白 la!! this's the worst presentation i've ever had..