Laugh from to much pleasure

My SO said he's never used lotion to jerk off so one day I wanted him to feel that (idk why) so I was giving my boyfriend a hand job, I had put LOTS of lotion on both my hands and started going to town. He was groaning and I start to twist my hands while still going up and down well his face told me he was REALLY enjoying it so I started going faster, he covered his face and a min later he started laughing/chuckling and I stopped and said "why are you laughing?" And he said "it was to much pleasure" me: "should I stop?" Him: "no, I like it. It feels really good" so I continued but every once in awhile he would do it again. It kind of confuses me because he kept telling me it felt really good and not to stop.(It didn't hurt my feelings or upset me, it just confused me)

Has this happened to anyone else with their SO?

Or have you laughed/giggled from to much pleasure?