You guys

Definition:
Friendly, informal, inclusive term to refer to any people who are present, whether male, female, or both. Always used in the plural. If used in speaking to one individual, the form doesn't change, but to the speaker, the individual represents a group, and the speaker is more often a female speaking to a male.

Usage:
Will you guys come over here and take a look at this one? I think you guys will enjoy it. Irritated speaker: Will you guys cut it out? = Will you stop doing whatever you are doing; it's irritating me.

Explanation:
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Trivia:
In the USA, women in the southern states think "you guys" is for males only and often look startled or offended when they first hear the expression.