When out of habit you reply to a comment with "You too". This happens to the best of us.
Two common situations of the Involuntary "You Too"

Girl: Well happy birthday man. Have fun at Sea World tomorrow.
Guy: Thanks, you too.
**uncomfortable silence**

Parent: Drive safe and have fun.
Son: Ok you too.
**uncomfortable silence**
by Jace555 May 8, 2009
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When you say "You too" to someone without thinking.
Involuntary "You Too"
Consession Stand Guy: Enjoy your movie.
You: You too. ...Er, wait.
*awkward*
by BondeOnTheLoose September 27, 2009
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Accidently responding to somone with "you too" at an unnecessary time, most oftenly used at a movie theater.
Movie theater attendant: "You're gonna be in theater 6, 3rd one to the right. Enjoy the show!"

Movie attender: "Thanks, you too!"

*awkward...walk away quickly, you've just used an involuntary "you too"*
by cleverdahling June 15, 2009
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When without realizing it, you respond with a "you too!" in a situation where it makes no sense.
Here's an example of an involuntary "you too" :

Zac - "Goin' to the psrty now, g'night sis!"
Dee - "You too bud!"
*awkward-ness*
by Homegrrl May 10, 2009
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