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1.
Gas, nausea, and softening of the stool caused by consumption of Mcdonald's food.
I should not have gone to Micky D's last night- I got a total case of the Ronalds.

After eating a double quarter pounder with cheese extra value meal and three chicken sandwiches, Jed spent four hours on the can with the Ronalds.
by billthakat February 26, 2010
 
2.
The process of cheating on your girlfriend, secretly being outed(girlfriend finds out), and finally vomiting after realizing that the brownies she made you contain another man's sperm. (Related to a local Cleveland legend that has recently been de-mythed.)
"Hey, did you hear that Charlene dumped Hank after she found out about his affair?"
"No, how did she let him have it!?"
"SHE GAVE HIM THE RONALD!!!"
by $ C-NOTE $ September 29, 2006