I go to this painting job(that's my trade) I'm working away and the guys who house it is is chatting and having a normal convo. I'm painting the spare room.He makes me a cuppa then tells me he is off for a shower. After about 20 mins, he comes past the room I'm in with just a towel round his waste and I just look up then notice his cock pressing against the towel. I hope he hadn't noticed me looking as I felt a bit daft.Anyway he comes back into the room a few minutes later, I'm in my knees painting away. His cock has got a little hard and is showing more. I look but he didn't notice this time. He walks closer to me and said that he saw me looking. Im lost for words.He stays it's ok and not to worry. Then drops the towel and moves even closer. I'm scared and excited. He walks up, puts his hand on the back of my head and slowly puts his nearly now fully hard cock into my mouth. Nice and gently, he pushes his helmet in. That feels so good. He slowly keeps pushing more in and I can taste his precum. He picks up the pace more, not too much and tells me I'm being a good little cock sucker. I'm moaning and feel like I'm going to cum in my boxers.He tells me to keep going. I'm wanking and sucking together, my jaw aches but I love it.He tells me to just suck it now. So I let go and he pumps my mouth more, then holds my head on his cock and without any warning he spunks in my mouth, there is loads, he groans. Spurt after spurt after spurt. He leaves his cock in my mouth let's go of my head and tells me I've done really well while he looks down at me covered in cum. I also came in my boxers. He walks away. I go clean up then finish the job like nothing happened.