The actions that a Simp takes that make them a Simp in the first place. For example, knowing a girl is way out of your league but then bringing her soup when she is sick thinking you're going to get something in return.
Boy1: Damn bro you're really showing some real Simptoms.
Boy2: Nah man I don't just do anything for any girl man she's gotta mean something to me!
Girl: Hey I am sick please bring soup even though we're neither friends nor romantically connected? :( :( :(
Boy2: Yes my sweet queen my shining diamond, my kitten, my goddess, my muse, my darling I'm not like other guys sweetheart I'll bring you the best soup unlike your ex who didn't care like I do because I am a nice guy!
someone who can't stop simping. they go over and beyond for their needs by buying merch, printing posters, and watching videos of their favorite tik tok girl, they might even stalk them and have pictures printed of them in their room.
jake: hey, who's the girl that matt is talking about all the time, he's obsessed over her.
me: oh it's a tik tok girl he's obsessed with, he's just a simpomaniac.
SimpoMode is when a person enters the most severe and enlightened state of simping. While in SimpoMode the simp will neglect all friendship responsibilities and focus on thier queen. Although recieving nothing from thier queen in return.