Define National Stright Guys Show Eachother Dick Day Meaning

National Stright Guys Show Eachother Dick Day
Everyday

Two straight friends show eachother there dicks

Friend 1 *pulls out dick*
Friend 2 "what the fuck dude."
Friend 1 "it's national stright guys show eachother dick day"
Friend 2 " oh ok" *pulls out dick*
By Diandra