when two or more females and at least one male are saying goodnight and the situation occurs where one female makes the other say goodnight before her to prevent the first girl being alone with male.
'i wanted to kiss Mike back there and you like, totallyjock-blocked me!'
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).