LMEBO Posted in L Best definition LMEBO Laugh my effing butt off.A way to say LMFAO without cussing. For clean people. your friend: DUDE! i just dropped my phone in the toilet! you: LMEBO! your friend: … How satisfied are you with the definition? Looking for LMEBO meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 20 times.