Biggest pet peeve since being pregnant is when i am asked my opinion on something that i am…

Biggest pet peeve since being pregnant is when i am asked my opinion on something that i am passionate about and i start talking about it to someone and another person walks over and just because they are comfortable with me butts into the conversation like they think they know what I'm talking about and then starts making jokes about it and totally deters the first person from the topic we were talking about. Like seriously screw you not everything is a damn joke. it's so annoying and rude and immature but I can't say anything because it's 2 coworkers and they are a lot younger so it'd no use lol so I'm just not going to give my input on anything anymore. I can't wait to have this baby so I don't have to be around these people but it sucks I have to come back after the 6 weeks :(