I always thought that the idea that Princess Bubblegum was made of and could be reconstructed out of candy to have so much r34 potential.
If my sketch isn't clear it's Marceline swallowing a big load from a futa PB, then snowballing it back, with PB blowing a bubble from it.
Mecha Kaiju X
2017-03-01 05:59:30 +0000 UTCBoogums
2017-03-01 02:53:22 +0000 UTCMerihemXx
2017-03-01 01:53:39 +0000 UTC