Grandma's cookies

Something special that should only be had or should only happen infrequently.
You can only have grandma's special home-made cookies a few times a year, and only for a small portion of your life until she passes.

"She only curls her hair a few times a year to keep the grandma's cookies effect."
by Qweenqwillava May 04, 2014
mugGet the Grandma's cookiesmug.
To paint one's penis green and then put cookies in their grandmas ass, and then put the penis in the ass.
Her: How was the family reunion?
Him: It was a total Green Penis Grandma Cookie!
Her: Holy FUCK!!
by Professional Educator September 22, 2020
mugGet the Green Penis Grandma Cookiemug.