[[A woman stands next to a Christmas tree with presents underneath it. She has a bucket full of pink liquid next to her, and a bucket full of purple liquid in her hands.]]
Purple bucket: Pour

[[She has the pink bucket.]]
Pink bucket: Pour

[[She stands with hands on hips, scrutinising the now-covered presents. 

[[She walks up behind a man sitting at a computer.]]
Woman: All my presents appear to be gram-negative. 
Man: I wish you hadn't opened the home bio lab kit first. 

{{Title text: In fact, of the boxes is full of Staphylococcus. The wrapping paper is coated in E. coli, though, so it's an understandable mistake. You know, we should really stop accepting gifts from that guy.}}