The meaning of Mr Bean's tattoo is to live happily. Mr. Bean is "a little clumsy, a little naive, a little one-way thinking, a little shy, and a little short-circuit guy. His sense of comedy comes from the daily life that you and I may happen". His usual dress is a very typical British Conservative middle class dress.
Mr. Bean's dialogue in the play is very few, and almost all rely on "rich body movements" and "changeable expressions" to present to the audience. People who hate him may think that this guy who pretends to be mentally retarded is really disgusting, but people who appreciate him will think that he is really great. He can express the British humor incisively and vividly. He can be regarded as "the British Jim Carrey acting in Chaplin's way".
Source: @rafamartins_13