When a reptile sticks its tongue out for a fast moment, either to smell something, lick something, or eat something. This most commonly happens in Bearded Dragons and Geckos but can happen uncommonly in mammals and amphibians. It can also be a sign of love from the animal.
Example 1
Rebecca: Are you going to mlerp the cricket?
Bearded Dragon: *mlerp*
Rebecca: Awww, want another buddy?
Example 2 Crested Gecko: *mlerp*
Steve: Did he mlerp you?
Carson: Yeah
Steve: Aww, that means she loves you!
NOSY MOTHER: "So do you like that girl Violet?"
TEENAGER WHO DOESN'T CARE: "IDK I DON'T TALK TO HER MUCH!"
NOSY MOTHER: "Sooo..... I want an answer!"
TEENAGER WHO DOESN'T CARE: "MERPH!!!"
Ussually used when there is nothing else to say, but can be used as a response to a yes or no question (or other types of questions) when you dont want to answer it. It can be used repeatedly to avoid answering a question.
Boy: "Wanna go out for a date tonight?"
Girl: "Merp."
Boy: "What?"
Girl: "Merp."
Boy: "Do you?"
Girl: "Merp."
Boy: "..."
Girl: "Merp."