When I was in the last year of sleep away camp I was dating a girl and we were very sexually active. One night we were with 4 other couples when my girlfriend told the others I could shoot my cum further than the other guys.
One girl bet I couldn't so we had each guy jerk off with the help of his girlfriend and everyone shot their load. The first three shot four feet each and the fourth did six. When I took off my shorts the other girls told me I had big balls. The guys laugh and told them that why his nickname is BB. My girl started to jerk me off and when I was close I took over. When I shot my cum it went 12 feet. The other girls and guys were impressed.
When they asked how I told them my girl stuck her finger in my ass and that helped.