1. This bum-azing mushroom:

dmott9 / CC BY-ND http://2.0 / Via Flickr: dmott9
2. These juicy oranges:

Tim Lewis / CC BY-SA http://2.0 / Via Flickr: gozalewis
3. This tree's lil hiney:

luvlite / CC BY-ND http://2.0 / Via Flickr: luvlite
4. This cheeky plushy:

OrangeHedgehog2007 / CC BY-ND http://3.0 / Via orangehedgehog2007.deviantart.com
5. This cutie-patootie, double-yolked egg:
6. This round, squishy modern chair:

Jason Kuffer / CC BY-SA http://2.0 / Via Flickr: digiart2001
7. These rolling hills of icing:
8. This sculpted-rear red rock:

Chuck Coker / CC BY-ND http://2.0 / Via Flickr: caveman_92223
So muscular.
9. This tasty double cookie:
10. This jutting peach-shaped water tower:

Meaghan O'Malley / CC BY http://2.0 / Via Flickr: ohmeaghan
11. These strong glute roots:

Hikaru Kazushime / CC BY-SA http://2.0 / Via Flickr: hikarukazushime
12. This bottom-dwelling "pigbutt worm":

Via biolbull.org
A deep-sea worm that looks just like a pig bum!
13. This lumpy potato rump:
14. These perfectly smooth succulents:

Quinn Dombrowski / CC BY-SA http://2.0 / Via Flickr: quinnanya
15. This delicious loaf:
16. This bum-tacular latte art:

Como Coffee / CC BY-SA http://2.0 / Via Flickr: coffeeandmore