What teenagers, particularly highschoolers say when they cut class to hookup with someone in some remote location in the school such as under the stairs. When asked by a friend why it took them 20 minutes to use the bathroom during algebra they reply saying that so and so and them "took a walk". Taking a walk means wandering the halls with someone of the opposite sex, and at some point fucking around with that person before returning to wherever you're supposed to be.
Melanie: Uhh Karen where the fuck have you been I've been sitting by myself for a half hour waiting for you to get back from the bathroom...
Karen: Ohh haha sorry girl I took a walk with Garrett ;p
Karen: Ohh haha sorry girl I took a walk with Garrett ;p
by killyouuuuuu December 17, 2010