Euphemism for penis, cock, one-eyed monster, etc. Based on the word brony
, which is from My Little Pony memes meaning older guy fans. Now it shall be known as a reference to penis
Note: References or puns related to MLP or other magical shit lands you double points.
Dude 1: "She came over last night drunk, and begged for a ride on my little brony"
Dude 2: "After our third date Wendy took my little brony for a magical adventure to the lollipop forest, and I double rainbow'd!"