I’m so stupid! PLEASE HELP

So I’m dating an older guy and I’m 16. I’ve never had sex or gave head. I told my bf that I gave head and experienced with oral but I’m really not ! I only told him this because when i told him that I was a virgin he laughed at me. What do I do? He wants me to give him head soon and idk how to? How can i play this off without him knowing that Idk what the fuck I’m doing ? 😭