Top definition
A heart attack caused by eating too much McDonalds.
*Girl walks up with a tray full of McChickens and begins to eat*
Boy:"Dang girl! You're gonna have a McHeart-attack!"
by monicaaa October 14, 2007
Happy St. Patties Day!
A heart attacked caused by high body-fat content, specifically obtained by frivolously eating too much fast food.
Mama Cass died from a McHeart Attack
by Flora January 14, 2004
Happy St. Patties Day!
When you order from McDonalds, Nuggets, Chicken Burger, Big Mac fris and that fish thing and you put them all between two buns. It will probeobly kill you in one bite.

I have seen it before...
Travis- Man, i just ordered some frys, nuggets, a chicken burger and that fish thing from mcdonalds and put it all together.

Mike- Wow. Id be carefull eating that!

Travis-(eats it) CHest in pain! Left arm numb! (passes out on floor)

Mike- Travis? Oh Fudge! That Mc-Heartattack must have killed him!!!
by Michael Amesse May 06, 2008
Happy St. Patties Day!