John and Yoko 

A slang term for marijuana, namely the pills. The name "John and Yoko" obviously refers to the late 1960's radicals John Lennon and Yoko Ono who were arrested on charges of posession of the narcotic.

Hey buddy, wanna try some John and Yoko? They say it's a gateway drug!

John and Yoko by Soapus July 24, 2006

John and Yoko Day

John Lennon and Yoko Ono spent their week-long honeymoon in bed in room 902 of the Amsterdam Hilton, the first of their "bed-in" protests against the Vietnam war, now a days having a 'John and Yoko' day is just a brilliant excuse to spend the day in bed with someone, all under the guise of a socially conscious protest!

Woman: I won't be able to make it into work today....
Boss: Why not??
Woman: My boyfriend and I are having a John and Yoko day, it is very important to the future of world peace!

John and Yoko Day by Babycakes76 April 16, 2009