I was 22, much younger (but of age) girl gave me a handjob under my covers. She reportedly had only given one other guy a handjob. I came on her stomach - probably about 6 ropes. She said, "I didn't know a gy could produce that much."
A couple of years later I was lying on my back going down on a girl. She took her left hand and started jacking me off. Right before I was going to blow I turned my body slightly so as to set up the shot. I blasted her tits, torso, and abdomen with thick steams of cum. She said, "It's EVERYWHERE." I remember she was especially nervous about the drops on her abdomen on the shaved patch over her clit. I got a roll of toilet paper for her PDQ.
Another girl in college who had never given head before blew me. I knew she didn't have past experience with a guy cumming in her mouth so I made sure to announce, "I'm cumming," well before the shot. She heard me but wanted to go for the gold and try to swallow. She gagged after the first two shots and the rest of my cum just flowed down my shaft and around my balls. She was embarrassed and said, "Sorry." I felt bad, she had nothing to be sorry about trying to take that load. But she was hard on herself.
Then I had one where the girl gave me a handjob and I came alot but it was more liquidy as opposed to thick and syrupy. Based on the ambient light in the room it had a glowing quality to it. She said, impressed, "It's like glitter."