HAFFENNAFF
Another bewildering experience for the big folks in the Moot is that there everyone speaks Mootish, or Haffennaff as it is more correctly known. This language is a conglomeration of a sincelost ancient Halfling tongue and every other language they've encountered. It contains bits of Grumbarth, the Ogre tongue, Classical, and some Reikspiel, and indeed some Reikspiel words come from Haffennaff, such as Halfling which is a Reikspiel mangling of 'Haffen'. Since the language is related to Reikspiel, most Mootlanders can switch back and forth easily, and drag words and conventions back and forth.
GMs can simulate this half-dialect by using some verbal tricks such as:
0 Dropped consonants. Where two or more consonants are together, the extra ones tend to disappear. So Halfling is haffen, farmer is fammer, hungry is hunny, Ogre is ogie.
0 Vowel lengthening. Short words that end in vowels often have extra vowels added, or used as links to the next word. 'How do you do' becomes 'Hoodoodee', and 'No thanks' becomes simply 'Noot'.
0 Metaphor reversals. Halflings enjoy lots of metaphors and metonymy and then reverse them in slang. Since one says 'as cunning as a fox', a fox can be known as a 'cunner'. Judges are 'sobers', merchants are 'honests', soldiers are 'straits'. Dwarves are 'drunkies', elves are 'lonelies', and humans are 'dafties'.
0 Hand gestures. Emphasis and a sense of scale can be added not with words but with adding hand gestures which to outsides seem unrelated, confusing and obscene. For example, someone addressing a crowd might not say 'Greetings to you all' but simply shout 'Hoodoo' and let the arm gesture express 'to everyone'.