buttoxen
1. pl. of buttox. Olde English: Buttock(s) 

2. More than one buttocks.
1. Little Jimmy's eyes nearly popped out of their sockets as he gazed across the sea of beautiful Brazilian babes' buttoxen, meandering over the Rio coastline. 

2. The public toilet seat was falling off its hinges from years of the fat, pus-ridden buttoxen that pressed firmly against it each day. 

3. Your family's buttoxen could weigh down a 747.