Do you have any evidence of this or are you just projecting?
Empirical evidence, no. Though some good reasons to believe this.
Extroverted Sensors are primarily concerned with interacting with their concrete environment. (All perception is concerned with the environment. Introverted perceivers tend to take their environment very seriously, which is why they tend to watch out for all things that could harm them. Very security conscious. This is because their approach to the environment is introverted and therefore shapes their inner identity.)
The extroverted perceiver is the opposite of this. His approach to the environment tends to be jovial and light-hearted. As if it is a never-ending party. This is the attitude the ESP carries on in public most of the time, if not always. Even more so than the Extroverted Intuitive because his concreteness makes him more in tune with the external world (as the outer world is obviously physical and concrete). The Extroverted Intuitive's abstract nature forces him to retire to his mind slightly despite the Extroversion.
Lets now discuss the nature of the ESP's relationships. Because the ESP interacts with the external environment fluently, he easily makes acquaintances. Since these relationships are not profound and are but part of his interaction with the external environment, they do not get to know the inner life of the ESP. They only see his jovial attitude, his public facade. Yet the ESP is an Introverted Judging type. This means that there is an intense focus on the narrow circle of associates. These people tend to be those they are intimate with. They tend to be few in numbers and are the ones that the ESP need not wear a mask for.
Hence, point one: Extroverted Sensation is prone to a jovial public facade.
Point two: Introverted Judgment leads to an elitist attitude where the intimate ones are treated very differently than common people. (I realize we all treat our intimate ones differently from the non-intimates, but this phenomenon is more prominent in the Introverted Judging type. To drive the point home, consider the disparity INFPs (especially) and INTPs treat acquaintances and close friends. Same is to be said for the EPs, though to a slightly lesser degree as Introverted Judgment is weaker.)
Thus, it follows that the Extroverted Sensors you got to know had no reason to tell you about their true inner feelings and thoughts of remorse about their vulgar and stupid behavior because you were not in their inner circle. You may have been (which I doubt), though if you were, I'd truly be surprised if not even in private and after years of assured closeness they would not confess what is within them.
As for anecdotal examples. Consider the following anecdotal example. Just let your aesthetical judgment take over here.
YouTube - Hinder-Better Than Me
YouTube - Hinder - Lips Of An Angel
The lead singer of Hinder is almost certainly ESFP...