The result of an extreme mutilation of the well used phrase "That is okay". The change occurs when the person types this pharse too much, generally after a thank you, and soon types it in short hand and even short short hand. The phrase has been changed as follows:
"That is okay"
"Thats ok"
"Dats ok"
"Dass ok"
"Dassok"
"That is okay"
"Thats ok"
"Dats ok"
"Dass ok"
"Dassok"
by kikumbob October 28, 2005
Get the dassokmug.