To fondle a sexual partner's scrotum and testes in a pleasurable manner. This ordinarily will occur during the course of oral sex, but can take place during any sexual activity. It can be used as either a noun or a verb.
Bro A: Bro! I met this girl at the bar last night and she chongled me like I've never been chongled before!
Bro B: O hey bro dude! Last week I met a girl who did me a similar favor!
Bro A: No way! I think the females are catching on.
Bro B: Wait, did she have red hair?
Bro A: Why yes. Don't tell me you hooked up with Rachel.
Bro B: O bro, we just got chongled!