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1.
Riggy means reason
You aint got no riggy to act jiggy, caus you aint hot, pigeon!

It means: There is no reason for you to act sexy because you are not sexy, women.

An ugly or mediocre women acts like she is Cleopatra, she is obtrusive and tries to seduce you while you are not interested. Then you say: You aint got no riggy to act jiggy, caus you aint hot!
by OG FLY ZIGGY May 01, 2011
 
2.
when Rick wears long johns he gets a boner
On a cold day he got a Riggy!
by anna January 03, 2005