(this is not like your first word ever its just the first time you say his name lol)
Classic
you and him are laying on the couch watching tv when you look at him and he looks back at you "you ok kid?" he ask's "sans" his eyes grew wide and he smiled and rubbed your head "thats me"
Fell
he was cooking (for once) and you kept staring at him which bother him "if you have something to say say it now brat" you got up and hugged his sleeve and looked up at him and smiled "red!" he gasped quietly and looked away
Swap
he and papyrus were fighting again and it was hurting your head so you stood up and yelled "blue!!" blue and pap looked at you and he smiled he hugged you and telling you to say his name again but you dont
Horror
for once you were actually lost in the house you were trying to find horror but you couldn't find him no matter where you went he was nowhere to be found "h-horror?" you say no louder than a whisper but no answer so you yelled "horror!!" you then hear running coming from the stairs and you see horror he walked over to you and bent down to your height "say it. again" he said
Nightmare
he was in his room at his work desk working on something you looked at him and then your growling stomach "n-nightmare!" he stopped and turned around and looked at the little bitty "what?" "i-im hungry" he groaned and got up to leave the room once he came back he gave you a strawberry and went back to his work
ink
he was working on a new au when you climbed on his shoulder "carful little one" he said as he pick you up and sat you on his shoulder "ink!" you said as you cuddled into his scarf he smiled and almost started to cry
error
once you said his name he turn to you and then pointed ad himself "error!" "what?!" "error!!"