rumbly-tumbly 

Playful sexual activity (chiefly British).

"That was a lovely bit of rumbly-tumbly."

rumbly-tumbly by jouissancepastance July 31, 2012

rumbly tumbly 

a fart/toot

Addison and Tazara had a rumbly tumbly fest after they ate fart soup!

rumbly tumbly by Addi Jellybean April 22, 2012

Rumble Tumbler 

A large bee that can be heard from yards away that flies toward you in a drunken manner.
The Rumbling usually causes mass paranoia which paralyzes it's prey.

After the prey is subdued, it tumbles towards it in a circular motion to feast on it's kill.

Rumble Tumbler's are the "Lone Wolf" of the bee family, known for going rouge and slaughtering anything in it's path.

"Watch out for that rumbletumbler, it's all shit-faced and flying right at you."
"I can feel the roar of the wild rumble tumbler"

Rumble Tumbler by Larzun I May 23, 2013

Rumble-bumble-tumble-weed 

Essentialy an unsually aggressive Tumble Weed.

Indigenous to rural America, the Rumble-bumble-tumble-weed has a larger mass than its Tumble Weed counterpart and is capable of travelling at higher speeds.

The kinetic energy produced by the Rumble-bumble-tumble-weed is unprecedented. Small to medium sized farm arnimals are particularly at risk as they become entangled in Rumble-bumble-tumble-weeds complex knottyness.

Typically after being subjected to a violent onslaught victims are usually found dead on the rooftops of buildings up to five miles away.

Sometimes animals are found without their skins, and sometimes much much worse...

Person A:
I have dead animals on the roof of my house. Why?

Person B:
Hmm ok... Are the animals intact?

Person A:

The chickens look fine, the pigs and the cow have no legs and no faces.

Person B:
Hmm. Was it windy last night?

Person A:
Yes. Very.

Person B:
Ah ha!

Person A:
What?

Person B:
Twas the Rumble-bumble-tumble-weed!

Rumble-bumble-tumble-weed by PsuedoPhilosopher October 27, 2011