Internal rhyme is a poetry technique described as metrical lines in which the middle and end words rhyme with each other. It is also known as "middle rhyme" since it occurs in the middle of lines. Internal rhymes are used extensively in English poetry, especially ballads and limericks. They play an important role in poetry because they sound natural and give a poem rhythm and flow. Middle-rhyming lines consist of two, three, or four stressed syllables followed by a single unstressed syllable or vice versa. The first and last lines of a poem may have internal rhymes while the others may not. Internal rhymes are often used to emphasize certain words in a poem. Examples of internal rhymes are madam/damn, can't/candy, blood/doughnut, breath/grouch, death/ditch, fat/foot, good/gone, hair/wreath, heart/wart, hot/cold, ink/untainted, meat/matte, mind/indeed, nose/sniff, sack/scratch, shinny/shiny, soot/hottea, sweet/sour, then/there, their/their's, them/their', us/our's, we/our', your/yore'.