Hide N' Seek Dragon (Patreon)

 "Mr.Dragon is really bad at hide and seek sometimes.
Sometimes it seems like he doesn't even try to hide!" 

 "Mr.Dragon got bored and accidentally ate a gooberry
 

Gooberry trees spread by having creatures eat their fruits, then they  can take over and cover the host with goo. The goo comes off once the  creature has traveled a certain distance. However they make the creature  incredibly horny so that they stop to "spread the goo's seed"
 

They're basically constantly cumming while going far enough away from  the tree. The travel distance is based on the creatures size. Dragons  happen to spread these trees very far... "