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1.
A peninsula is a gay person that has some affiliation with the gay scene but it only represents up to 1/4th or less of his life. Usually because he knows what drama it entails. Peninsula's are happy living on there peninsulas, reaching a balance between the scene and the ocean of girlfriends that surrounds and takes up 3/4ths of his life.

Peninsula's are out of closet and on the map, but due to their limited contact, some people might not know that much about them. They are easier to get to know than "island(s)" (look up definition) because they are out and affiliated with the scene.
Screw finding me an island gay. I can't be bothered to sail to an island, ill just get me a peninsula.
by Whatevah! March 07, 2009
 
2.
The type of receding hairline that retreats simultaneously on both sides of the scalp leaving a pronounced section of hair in the center.
That guy should stop using so much gel in his hair as it really accentuates his peninsula.
by roachpoach October 30, 2009
 
3.
The body of excess skin that extends from the base of the nutsack and creates a ridge out into the butthole region.
Wipe from front to back, else you'll smear shit on your peninsula.
by Nathan Morgan January 17, 2006
 
4.
Penis, external organ of a male
Man I really need some peninsula in my life its been a long time since I have gotten some.
by Redhot gurl April 19, 2009