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2.
when an ex contacts you when you're feeling good again after a breakup or you've found a new man. radar for happiness.
why's he calling me again?
happydar.
by eminjay March 28, 2005
 
1.
The radar transmission in your ex's brain where the moment you are happy, and over them, a signal goes off in their brain to contact you and ruin everything.
Julie: today is the day my exes contact me.
Marisa: heh?
Julie: my ex matt called me last night
Julie: and my ex derek IMed me
Julie: neither i ever talk to
Marisa: of course
Marisa : they have happydar
Marisa: if ur not miserable over them
Marisa: they know it
by Marisa March 04, 2005