Definitions by Hermione Granger,the Red Ranga

Summertime Splash 

when you give someone head under water and when you come up they splash you in the face with their cum

I totally summertime splashed that ho the other day, in the kiddy pool.

Similar to winter snowball with snow.

Summertime Splash by Hermione Granger,the Red Ranga October 13, 2011