Surely you must have said something that would have made ol’ Sigmund proud, that you felt like your whole body was turning red, that you were never gonna live down.
Today, one of my workmates commented on two women that they must “be concubines”. He meant to say in cohorts. Whoops.
I once complimented a lady on her lovely new Fat and asked her if she’d gotten it for christmas
Isn’t that when you say one word and mean a mother?
Well… one day Freud stepped out of his door in December right onto this patch of ice…
What? Not that kind of Freudian slip?
sigh
Ok… sorry folks… 
Today I was talking to my lawyer. It was a heated debate, because I think my law firm is screwing me.
At one point, my lawyer said something in defence of lawyers, but instead of saying “lawyers”, he said “liars”.
A friend of mine once meant to say to her boyfriend “pass the salt”, but it came out “You’ve ruined my life, you arsehole.” She was so embarassed…
A couple months ago at work, someone told me that some people from a neighboring department were going out to dinner that night. I was somewhat excited about this and I told some of my female co-workers, “Hey, you wanna go to a breastaurant tonight?” Man, and I wasn’t even staring at their breasts… that time…
First sales job ever selling software - brand new to the world of technology and not familiar with any of the lingo. During training, we actually practiced on real potential customers. We were at the part where we were inquiring about their system specs and I actually asked someone, "What size hard dick do you have?!
I didn’t make the sale 
But I should have, dammit!
::hanging my head in shame and slinking out, knowing no one will top that::
My co-worker was giving a tour of our office and when she was talking about the Living Materials Center and the things we provide to schools, she said “…and we have orgasms.”
I can’t think of a response to the OP at this time, but I had to tell you, Shayna, that I’m sending the bill for a keyboard and monitor cleaning to you. You made me spew coffee all over the place!!! 
I once worked with a girl who had about 1/4th of an arm due to a birth defect. We chatted frequently and I never (at least I didn’t know I did) thought anything of it. One day she says to me “How ya doing?” to which I replied:
“I’m busier then a (I then caught myself mid thought…) beaver!!”
I was ABOUT to say “busier then a one-armed paper hanger” (which was a favorite phrase at the time). Thank God I caught it. “Dr. Freud! Paging Dr. Freud!”
Zette
When my exwife’s sister was pregnant, we were discussing the impending birth. On more than one occasion, I refered to the fetus as the feces.
I was called on it and admitted my mistake. Looking back though, I think I was right in the first place about the little sh*t.
Back in 6th grade, calling my teacher “Mommy” in front of the entire class.
For me, probably that time I screamed out my mother’s name during sex.
Well, yeah, I was fucking my mom, but I knew she didn’t like me to talk while we were screwing. Good thing she was dead at the time.