Sexing help

My friend and I have been talking for about a year. No sex yet just texting and talking. He sent me the “LMAO” and I was like yea it means laughing my ass off & he’s like no it means lick me all over 🤣 so im wanting find a slang for for big dick that’s funny and something so he can ask what it means. I need your help ladies. Thanks in advance.