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/ Source: TODAY
By Erin Clements

Office crushes are tricky territory, and it can sometimes be difficult to draw the line between flirtatious banter and straight-up stalking when you're smitten with a colleague.

To clarify what constitutes appropriate office behavior — and what may get you sent to HR — Fast Company has created a very informative (and hilarious) two-minute video in which Upright Citizens Brigade comedians demonstrate various scenarios, pointing out the difference between how you think you look and how you actually look when you're trying to flirt.

Key topics covered include the length of time it's acceptable to laugh at a crush's joke, when a funny voice really comes off as creepy, and why fixating on a co-worker's daily beverage choices is likely to make them uncomfortable.

And above all, discussions about Excel should never be accompanied by shoulder rubs.

Check out the video and try not to cringe!

This article was originally published Feb. 6, 2015 at 5:03 p.m.