When you
feed someone learning your language a fake
definition of a word or a completely made up word and
definition, in the hopes that they will look silly using it publicly at a later date, and getting funny looks.
For example, tell the language learner that “I have a velociraptor in my
head” means “I am really
hungry” and just wait, years if necessary, until they decide to use it in conversation. The term velociraptoring originated from this being the
first ever attempt at the technique.