On a chalkboard in one of my classes was the phrase "anapestic tetrameter." A classmate and I spent a few minutes trying to figure out what it was. We'd heard of "iambic pentameter," so we were reasonably sure this was a literary term, although "anapestic" sure sounds like an infection of your GI tract.
After a quick google search, here is the answer to our query, cobbled together from varied sources which I have sadly forgotten to write down for author credit:
A "foot", in the poet's glossary, is a unit of stressed and unstressed syllables. There are many varied combinations possible; five prevail in English poetry:
one unstressed syllable, followed by one stressed : iamb
one stressed syllable, then one unstressed : trochee
two unstressed, one stressed : anapest
one stressed, two unstressed : dactyl
two stressed : spondee
A rhythm built by repetitions of iambs is "iambic". Repetition of trochees is trochaic; anapests, anapestic; dactyls, dactylic. For a line of all spondees,it's "spondeic".
monometer one foot- he SITS
dimeter two feet- he SITS on CHAIRS
trimeter three feet- he SITS on CHAIRS in BARS
tetrameter four feet- he SITS on CHAIRS in BARS and THINKS
pentameter five feet- he SITS on CHAIRS in BARS and THINKS of CARS
hexameter six feet- he SITS on CHAIRS in BARS and THINKS of CARS that BREAK
Evidently, the best known example of anapestic pentameter is "The Night Before Christmas." So now you know that to have anapestic pentameter, you need poetry, not Pepto.