stringonym

stringonyms (string + onym) are phrases that look alike when combined together into a single "string" of characters without spaces, separating punctuations or capitalizations, one often being hilariously misread as the other.
"Pen Island" and "Penis Land" are stringonyms, and the real-life website of Pen Island is often misread as PenisLand(dot)Com.
"Experts Exchange" and "Expert Sex Change"
"Speed of Art" and "Speedo Fart"
"Who Represents" and "Whore Presents"
"Psychotherapist" and "Psycho The Rapist"
"Mole Station" and "Molestation"

Stringonyms typically occur in the form of carelessly-written website addresses, hashtags and usernames.