Top definition
Falls Through The Floor Laughing - Can only be used on the internet.
Mike: And then he says, "Your mom goes to college!"
Ryan: FTTFL!
by AltiLover May 24, 2007
Happy St. Patties Day!
Falling through the floor/floors laughing
I FTTFL in my apartment building because I saw something funny.
by holy MOG August 03, 2017
Happy St. Patties Day!
buy the domain for your foodie vlog