A fork of Rural Dictionary
To perform a task recklessly, yet skillfully, under dangerous circumstances; to waste no time in doing something that needs to be done right now, while "cutting corners"; to disregard formalities and niceties in a social scenario by getting straight to the point that more often than not, can be considered offensive.
"You specters play fast and loose with the law - that's bad for business," -Gianna Parasini, Mass Effect; "You all better not be fast and loose when driving down that muddy hill while hauling the dangerous cargo in the trucks!"; "A lot of people like to take things slow when dating, not rushing things by being fast and loose."