guerrilla date 

when you take out a girl to run an errand or other non-date and elongate and drag it out to be a date, trying to do so under the radar.

I took out Michelle on a guerrilla date..... she thought we were just picking up party favors.

guerrilla date by fughettaboutit November 17, 2010

Guerilla date 

when someone purposely extends the length of a cooperative task with a girl or guy they like in order to turn it in to a date

Hey that guy totally turned that trip to the grocery store with Michelle in to a guerilla date.

Guerilla date by Fughettaboutit April 6, 2010