tumblesalt

The tumblesalt is an acrobatic feat in which a person tucks in mid-air and moves the feet over the head. The tumblesalt can be performed either forwards, backwards, or sideways and is similar to a flip (or, if performed backwards, backflip).

Jane performed a perfect tumblesalt to win the competition.

tumblesalt by Bob bergousicious January 2, 2008

tumblesault 

An inadvertent somersault done with mistaken grace. Usually performed by small animals or someone who is drunk.

My dog just did the craziest tumblesault.

tumblesault by Bippydoodle August 10, 2016

tumbleset 

Similar to a Somersault,,,but in scranton speak

tumbleset by regan September 25, 2003

Tumbleslore 

One that is strangely addicted to tumblr.
Not that there's anything wrong with that.
Most commonly also known as a tumblewhore, but eh. slore's more fun.

Person #1: Omg... look at this tumbleslore's tumblr. she updates like every five minutes.
Person #2: Wow. no life.

Tumbleslore (other side of room): they don't understand the true fun of tumblr...
Onlookers: GO TUMBLESLORE!

Tumbleslore by larssss June 29, 2011