Paddling
My dad paddles me with a table tennis paddle whenever he thinks I'm being a smart ass, which I am, or when he catches me masturbating which is often.
He puts me over his lap with just my briefs on and paddles me, but not hard. I have a near 7 in cock and I get as stiff as a board and I ejaculate in my briefs when we are cock on cock and my orgasms are unbelievable.
Dad gets a hardon also. I can feel his cock pulsate in his jeans and then he cums and his cock goes soft.
I am 18 and this is nuts! but I enjoy it and the paddling will stop soon and I will miss it, as this has been going on for years.