What type of meme involves the use of a character or image with text that imitates a childish or exaggerated way of speaking (e.g. 'Ermahgerd')?

'Lolspeak' is a type of internet language that uses intentionally incorrect or exaggerated spelling, grammar and idioms for comedic effect, often associated with animal memes such as 'Lolcat' or 'Doge'.