Define Fast And Loose Meaning

Fast And Loose
To behave recklessly, irresponsibly or deceitfully with no regards to the consequences of said actions.

Alastair said "I'm going to buy some sex dice to spice up the bedroom " and Henry replied "on the university wifi? That's fast and loose!"
By Merry
Play Fast And Loose
to behave recklessly, irresponsibly, or deceitfully toward someone or something, such as acting in a manner that contradicts conventions or guidelines

Wow! He sure does play fast and loose with money.
By Fiona