If your partner doesn't clean up your spunk after jerking you off. You let the cum dry until it becomes crusty/flaky. Once it is dry, you flake it off onto your unsuspecting victim and yell "Winter Wonderland!"

A pubic hair piece. A toupee for the pubic area/genitals. In the 1700’s when mercury was used to treat sexually transmitted diseases (Gonorrhea or Syphilis) one of the side effects was the loss of pubic hair. To disguise this condition, that was not cured by mercury, a Merkin was employed.

A grey haired yet sexually attractive older woman.

When a substantial area is covered with snow, ice and frigid temperatures. Usually happens in northern areas during winter time. Don’t listen to those ratchet ass definitions involving sexual acts, life’s too short for that shameful sh@t.

The place your friends told you you were all going that one night in high school. You followed them and they took you to a club. Flashing your fake IDs, you proceeded to absent-mindedly wander into the bathroom and ask, "Is this the Winter Wonderland?" To which they respond, "Not yet." while Whipping out a bag of white powder. they pour the substance over the counter and use the fake ID's to shape them into linear mounds. When asked who was going to go first, you volunteered. Knowing what to do from pop culture, you lower your head and inhale through your nose. Asking once more if you have reached the Winter Wonderland, Jeremy, the hot jock replies "Yes, Yes we are."

The dimension you find yourself in on a cocaine high

When a prostitute (of either gender) puts a gram of cocaine into their ass crack and proceeds to fart it into one's nose, a Winter Wonderland occurs.

Winter Wonderland is another term for a bukkake session. Basically it is when many men shower one women with sperm until she is cover in a "wonderland" of semen.