To splash someone, is
uk street
slang to stab someone with a knife.
The idea of the splash is to symbolise the blood going everywhere
This is mostly used in uk trap
music
Lyric example:
"that boy got splashed up, I'm surprised that boy is not dead
The knife went through, the Knife went through his
head... And everything was all red"
- made up example of a typical
UK trap lyric