A german army helmet is another word for circumsion. It is common for Jews.
Bedes dad has a smooth german army helmet, which granny loves.
by dave hte danish lad July 31, 2006
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The German Diving Helmet is a sexual position in which one person inserts his/her head into a female’s vagina.
Gerald: Why does your head smell like fish?
Phil: Tonya let me do a German Diving Helmet last night. What a freak!
by Turnipgenocide June 12, 2018
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To depress one's forehead with the end of your penis leaving a german helmet stamp imprint on the recipient.
Shut the fuck up or I will give you a german helmet stamp on your forehead!
by Backsack Bob March 7, 2014
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A gift you give to another person but really intend to use it or benefit from it yourself.
I got my husband a new lawn mower for Christmas, but it’s really a German army helmet. Now he’ll have to mow our lawn!

I got my roommate a German army helmet for Christmas.. the newest espresso machine! Now I don’t have to go to Starbucks anymore.
by kdawk August 4, 2018
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