The term Mcshittle refers to the meaning of eating a Mc Donalds breakfest sandwich such as a Mcgriddle or any other sanwich and after 5 mins of being done with it. You start shitting horribly. Thus having the Mcshittles.
when you give someone skittles and you get them addicted to their delightfully fruity skittleness and they want more
dude #1 hey can i have a skittle
dude #2 sure here you go dude #3 way to go asshole you Mcskittled him you might as well give him the whole pack
dude #1 uhhhhh can i have just like 4 more
dude #2 WTFM
The art of female vaginal gas release (a parp) whilst defecating at the same time (shitter). To be a true parpy mcshitter, the women must do this act into a Mcdonalds Mcflurry icecream container. Then a straw or other eating device can be added and served to the customer.
I was up at Gregs house and he made his girlfriend do a Parpy Mcshitter. We then went to Mcdonalds and snuck it into the Mcflurry tray.... I believe a small child died.
M.C. Grittles is a famous underground gangster rapper in Maryland often called McGrittles he's put out over one hundred songs his most famous is "Jingle Bells:Part XII The life of a True Bro"