One who steals dildos. Often for the mere fun of it. Dildo bandits are very devious and should never be trusted, especially with a dildo.
Alexa: Hey Jenni, have you seen my dildo lying around anywhere?
Jenni: Oh yeah its in my sock drawer, near the butt plug.
Alexa: Jesus you're such a fucking dildo bandit.
Jenni: Here you can have it back you little slut. I was gonna tell you to go fuck yourself anyway.