A bildo is an anal dildo. Sometimes referred to as a bulldo/buldo. Known within many gay communities as a billy (slang).
Josh loves to bully himself around with "Andy" his favorite bildo. Sophia likes to help me masturbate. She will use a bildo on me while I wrap my fist around my cock and play with my balls. As I get close to coming, she thrusts the bildo harder into my ass. My climax is mind blowing.
When you can't find your dildo and you end up using your neighbours (Bill) fist.
Knock knock....
Amy: You home Bill?
Bill: Oh hi Amy what can I get you? A cup of sugar?
Amy: Ummmmm just wanted to know if I could borrow your Bildo
Bill: OK no worries, I have a pie in the oven so you can only borrow it for about 10 mins
Josh opened his tool box yesterday and there was a bildo inside. He blushed and slammed the lid, ashamed of his obsession with bildoing himself in the porto potty at lunch time.