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Usually used for comedic purposes, for example in Shrek:
Welcome to Duloc, such a perfect town
Here we have some rules, let us lay them down
Don't make waves, stay in line
and we'll get along fine
Duloc is a perfect place
Please keep off the grass
Shine your shoes, wipe your face
Which begins with an AABB, and subverts the viewer's expectation of "ass", in the final line.
I believe it would just be called a teasing rhyme, or more widely a mind rhyme. As in the link https://en.wikipedia.org/wiki/Mind_rhyme:
Mind rhyme is the suggestion of a rhyme which is left unsaid and must be inferred by the listener. Mind rhyme may be achieved either by stopping short, or by replacing the expected word with another (which may have the same rhyme or not). Teasing rhyme is the use of mind rhyme as a form of innuendo, where the unsaid word is taboo or completes a sentence indelicately.
