surproner 

Surproner - a surprise boner. It creeps up on you, completely unexpected and often occurring at incredibly inconvenient times.

"Oh man, I can believe I got a fucking surproner during the eulogy at my Grandma's funeral."

surproner by Blink169 June 19, 2015

sproner 

A freshly sprung boner (n.) (spro-ner).

1. Every morning I wake up with a sproner.

2. I suddenly realized I had a sproner in the middle of class.

3. I saw that hot chick and I got a sproner.

sproner by Jon of B. January 18, 2006

The Surpriser Riser 

noun, The term used to represent the event any man, including myself, despises: Getting an erection in public, usually when in an open area and/or near many other people. The victim generally walks like an old guy, seems to be weilding a very large gerbil in their pants, or simply tries to think of gory, morbid, discusting, non-arousing things to get rid of The Surpriser Riser. Usually, when the man may be ok with having an erection later, as he is alone, he will not get one. Until he goes out in public again.

"Oh, fuck! Not The Surpriser Riser again!"

The Surpriser Riser by Carson Lynch July 13, 2006

surphone

To surf the Internet via a smartphone, perhaps obsessively

It's rude to surphone while eating lunch with your crush, unless you both are surphoning.

surphone by TheOldProfessor May 16, 2017

Butt Geiser Surpriser 

Also known as the BGS, this is a loving sexual act in which the giver urinates up the butt of the recipient.

BGS tournaments are also known to occur in some parts of the United States, though the rules of the tournament aren't well known.

I couldn't believe the sensation brought on to me after receiving my first BGS.

After years of BGSing, I have a permanent limp.

Butt Geiser Surpriser by Dave February 12, 2004

The Surpriser 

The act of inserting 2 fingers into the anus and 1 into the vagina

I just gave Shelly the surpriser and she loved it.

The Surpriser by Matthew Law November 30, 2006

surpriser

when someone looks like they have an average size dick but they are actually packing a python

Doug: How big do you think my dick is?

Blondie: Well I would think about 6 inches but you could be a surpriser.

surpriser by Dieselson41 March 12, 2014