sundial 

Tanning naked with an erection to avoid embarrassing penis wrinkle tan lines.

Dude 1: Yo, why are you laying by the pool naked?
Dude 2: I'm tanning my penis.
Dude 1: Don't you know you can only get a nice even wang tan
when you have a boner? Rub that into a sundial.
Dude 2: Shit. good call.
Dude 1: What time is it?

sundial by YoungBuc October 2, 2007

Sundial 

The art of taking a massive dump that stands straight up out of the water much like a sundial standing straight out of the sand

O dude i took a huge as shit yesterday and you won't believe it.....IT WAS A SUNDIAL!

Sundial by Nastiestpoopweinerurinaldeuce January 26, 2009

Sundial 

Sundial (noun): the sundial is a legendary fart. It may only come around once in a life time. The sundial does not have a designated set time, however, he who passes gas shall know when a sundial has occurred. It is long, and may be powerful as well. The sundial is the longest fart you can achieve ahead of the stopwatch, timer, and calendar in that order.

Bro I went to Phoenix Buffet last night and ripped a sundial after.

Boys gather around, I think a sundial is about to come out of me.

Sundial by HaHa Clinton-Dix III December 3, 2019

sundial pizza 

the slowest pizza place on the planet. generally tastes like cardboard. average delivery time: 2 hours.

Bob: Hey I think I'll be hungry in three hours, better order sundial pizza now.

sundial pizza by MATTATTACK22 February 9, 2012

High Noon on my Sundial

This is a very slang term to say that you have an erection.
Proper use of this is when a hot girl comes up to you to ask what time it is and you reply with this.
I heard this on the show "Beevus and Butthead."

Hot girl: Do you know what time it is?
Guy with erection: It's High Noon on my sundial.

High Noon on my Sundial by Spartanboy3000 April 3, 2010

Kentucky Sundial 

The action of moving your boner from the 6 o'clock position to the 12 o'clock position and tucking it into your waistband, to avoid the embarrassment of showing your spam javelin in public.

Duuuude I had to give myself a Kentucky Sundial before I went up to the chalkboard to do that math problem!

Kentucky Sundial by jdizzzzz April 28, 2020

California sundial 

When one gets an erection while laying on their back on a sunny day, causing a shadow which can be used to tell time.

Does anybody wana get on my California sundial?

California sundial by J FaRgZz July 7, 2011