It's possible to get inventive with the colorful pejoratives without invoking often fun activities like cocksucking.
For instance:
Constipated hagfish!
Non-ambulatory slime mold!
Shit-fracking refinery lackey!
Knuckle fucking cum bubble!
Herniated circus cop!
Quim defiling parasitic twin on a rancid baboon's extra testicle!
Perineal raphe unzipping dick skinner!
President of the Eleanor Roosevelt memorial Hairy Nipple shaving and fixie bicycle maintenance club.
Cunt-flensing clit-biter!