Table-Dancing Schutta...or something to that effect
schutta and sithspit are very good ones
I've used "bantha pile" in my fics as analogous to "bullsh-t!" (and usually coming out of Carth, as he's a suspicious bloke with an oversensitive BS alarm)
Karen Traviss's Mando'a language is GREAT, and she depicts those fellows as a rather garroulous lot, so we get delights like "mir'ossik" (Sh-- for brains) and chaakar (literally, "grave-robber," but used like "bastard") I could see Canderous hurling THAT one towards Atton frequently... Dar'Manda is also something you might hear out of Jagi. It means "no longer a Mandalorian," and is probably something you say only if you want to end up on the wrong end of their BFGs
You all have meatbag tendencies.
Here's a couple.
Bantha-Fodder
Nerf-Herder
Son-of-a-Bantha
Hairless Wookie
One-legged tach
Gamorrean Dung-Breath
Scruffy-looking
Laser brained
Hutt's Backside
:D
Just spotted a relatively elaborate insult in one of the Star Wars Republic: Twilight comics and felt the urge to post it:
"Your mother was a bantha and you were one of her less-savory droppings!"
"Sithspit!" it's my favorite.
"scratch gravel ner-vod!"
"hutt's back-side
"chuba face"
"sith's blood"
"mudlicker"