So on and so forth. Used as a replacement word for an action that is either too obvious, banal and/or equivoque to speak aloud. Usually repeated; "yada, yada, yada". Is to action what blah is to spoken words.

Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.

The saying Yada Yada made popular by the Seinfeld show probably either originates from the Hebrew word yada "to know" or yadah "to revere or worship with extended hands".

Source: Strongs Concordance, Hebrew and Chaldee Dictionary of the Old Testament. 3034, 3035

Yada is a Hebrew word which literally means "to know." It has come to mean 'and so on, and so on, and so on,' or 'et cetera, et cetera, et cetera' which is latin for 'and so forth, and so forth, and so forth.' One can think of yada, yada, yada to mean, "you know, you know, you know" as if to say just more of the same as I've already told you.

a crystalline tropane alkaloid that is obtained from the leaves of the coca plant.

"Yada, Yada, Yada" is a phrase popularized on the Jerry Seinfeld show to imply sexual activity among unmarried persons. It may be related to the "ya,da' which appears in Genesis 19:5.

It's all right