H4U 

Used in an app called 'Vent' for smartphones, it means "Here for You" where the for is '4.'

Person 1 - "oh no i feel so alone"
Person 2 - "H4U"

(I do not reccomend using this in real life speech)

H4U by MaxKFuller December 10, 2015

H4U 

It is another way to say "here for you/I am here for you"

Person 1: I feel miserable

Person 2: u knw im H4U <3

H4U by bjoy October 21, 2015

H4U 

here for you

raven: i am miserable
vent: h4u

H4U by ravenoodles December 5, 2015

H4U5 

A person who is exceptional at many things he can get girls and party hard. The 4 being an A and the 5 being a S H4U5=HAUS

Dougie- That kid Isaiah is such a H4U5!
Mason- yeah dude i heard he gets all the women

H4U5 by H4U5 October 5, 2011