It’s time for the “7th inning stretch,” If you know what I mean (and I think you do).
Kn(Nudge’s as good as a wink to a blind bat!)ckers
Multi-tasking.
I actually had a friend with a monkey, and it was bad, and he had to discipline it sometimes…
If you know what I nudge/wink
I was doing some training in Sweden, and the guys I was working with asked if they could take a break and go over the material in Swedish. What they actually said was “We want to have a Swedish Review” to which I answered “In the US, that would involve naked women…”
I explained for about 5 minutes, and then hilarity ensued.
You had to be there.
Nevermind.
Tuna Helper
If you’re in the proper frame of mind, almost any common phrase can sound dirty.
“Rotating my tires.”
“Flipping burgers.”
“Opening a can of hash.”
“Hi-octane.”
“Trimming the tree.”
Sometimes it’s the phrase itself, I’ll admit (I mean, mounting someone’s hard drive…yeesh!). But if you’ve decided to notice it, anything can seem dirty.
In a computer science lecture:
“…each girl gives a boy the optimum…”
It’s better than learning how to get_head(), I guess.
Sorry, these are work-related
“Adjusting the focus nob” IYKWIM
“Running out the Barrel” IYKWIM
And, my alltime favorite, after finishing a lighting hang, I can announce that we did a good job hanging the lights, yes, we are:
“well hung.”
tee hee heeeee.
Cocktails.
Fluffernutter.
Fudge brownies.
Floppy disk.
Tight end.
Lake Titicaca.
A former coworker once sent me into a spasmodic giggle fit with the statement:
“I’ll just use the non-penetrating roof mount.”
He was talking about the free standing antenna mount mast we had sitting on the roof, he was testing some wireless ethernet eqiupment with it. I just happened to be in one of those moods and just couldn’t stop laughing.
I just asked a visiting manager if he’d seen the banana I left him. Double entendre ensued (my pointing out that they made no sense since I’m female didn’t help any.)
Butt Splice (a wiring connector)
Hex Nipple (a plumbing fitting)
Gas Box (a cylinder storage cabinet)
Four Point Probe (a wafer measurement tool)
And my all time favorite:
Butt Lapping (a silicon wafer grinding method)
A couple more work related “euphenisms”
I always feel a little uncomfortable when someone uses “male-female” terminology when talking about electrical connectors. “just stick the male end into the female end, and you are done”. That is not even mentioning that there are many types of connectors where it is tough to tell which is the “insertion” end and which is the “insertee” end. Furthermore, it sounds pretty stupid when I ask, “what makes it male”. Some comment about birds and bees always ensues.
But my favorite came from a lady who was calling our office to complain about one of our technicians. Her exact words were, “Your guy was here yesterday and he cracked my bush.”
A little advice to everyone. I don’t care how much damage someone has done to your shrubs, never claim that he “cracked your bush”.
Undertaker.
(Accompanied by"fisting" motion)
bjohn - the bush-cracking story made me laugh so hard I teared up. 
Just for that:
“dipstick”
Actually, that sounds disgusting. I don’t think I’d want to be on the receiving end of anything that could be likened to hash (other than hash).
[semantic nitpick]
I don’t think euphemism is the correct word for what y’all are describing here. How 'bout innuendo?
[/sn]
Roll up the Rim to Win!
I think this is another one from Letterman’s Top Ten List that I always remembered:
“shaking hands with President Lincoln”
Here’s a chemistry term that only after 15 years in the field can I say in mixed company without at least a smile:
Mother liquor
Wankel rotary engine.