Acting inappropriately in social situations is scarring my relationship, please help.?

Im no shrink but i do the same thing only i put down myself. I think its mostly habbit. When i was younger i was picked on alot. I was mute most of my childhood and still struggle with it day to day. I think that someone has said them jokes twards u b4 and they thought it was funny. Now ur doing it to people cause u think its funny. Its like playing hot potato. I didnt pass it on i threw it up in the air and caught it myself so my brother could laugh. I took it the wrong way and as i finally found out what i was doing i was ashamed and embarrased so i jus kept my mouth shut. Ive learned now that best thing to do is to acknowledge what u say. Im glad u have a partner cause tgat makes it easyier. Everyone needs a hand cooping woth childhood "deffects" or what ever u wanna call em