smpl Share definition Flag Shit My Pants Laughing. (Used online only.) Used for greater emphasis than lmao Jeff: I just broke my keyboard trying to kill a spider. Mark: SMPL! smpl by Decaf October 30, 2008 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug