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The uncontrollable back and forth circular motions made by a woman's hips when her man has made her horny but is not there to satisfy her sexual cravings and NEEDS.
My hips undulate when I'm in the saddle, riding you.

My hips undulate wildly when you are far away and we have phone sex. That's phone fucking at it's best.

When you talk naughty to me like THAT, my ass take on a life of it's own, undulating relentlessly while your words make me cum over the phone. I quiver. I convulse, I spasm. I cum. Undulating ceases.
undulate by zazz July 28, 2012
Related Words
ubdul undulate ubducted ubdle ubdush Ubul ubula Ubullwawa Udula Udulish
moving from side-to-side or back and forth; rocking, basically the motion a female does when shes riding you
that boat undulates in the water

I like it when she straddles me and undulates
undulate by suprmn90 June 2, 2010
Someone who does incredibly stupid things and doesn't realize how stupid they look.
He was real udulish back then

Don't be a udulished bitch

Still remember him,because his udulish behaviors
Udulish by Dumb_Nemesis April 18, 2013

undulating thrum bobber 

An erect penis quivering.
Rob made her squel when he poked her with his undulating thrum bobber.
Udula is the sweetest guy ever with the sexiest eyes and hot as fuck body
That guy is well fit... I think his name is Udula
He's an ubul for sure
Ubul by Sipis88 September 2, 2021