Windshielding

When recieving a blowjob from someone with glasses, you pull out and cum on their glasses.

Windshield can mean two different things. The common usage for using windshield is on a front window of a car.
The second common usage for windshield is whether. The speed of wind, which is used on the news. I am sure you've heard.

The small, shark-fin-shaped portion of the bottom of a car's windshield where neither wiper blade can reach, thus resulting in a perpetual shark-fin-shaped area of filth.

When a man ejaculates on a woman's glasses while she is wearing them. She usually has her eyes open.

When a male takes his penis and rubs a vagina vigorously right to left while she is urinating, both male and female get urine splashed on them.

the act of a women giving such a deep blowjob while glazing her toungue across your balls as her mouth is all the way to the pelvis bone. The toungue acts as windshield wiper to your balls.

The amount of time wasted or lost driving from point A to point B during work hours.

Background information: This is a common term use among construction workers on the central coast of California. Since one may have construction projects spread out over the county.