I was lecturing about Information Overload and multitasking recently, and told my audience how the research data shows that trying to multitask makes you less efficient at each of the tasks you try to do in parallel. After the lecture, one attendee came up to me and gave me a lovely definition she had for Multitasking:

Multitasking is a way to screw up a number of different
things at once.

I just had to share this gem with you!