What is Stmlu?
1.
An abbriviation for shut the man lard up.
It similar to stfu but funnier because it seems random.
It is similar to
"Is your mom a man?"
"Stmlu"
See
2.
An abbriviation for shut the man lard up. At first it was was only used online but now it is making its way into everyday speech. It is close to
Joe: Your mom is a man
Bob: Stmlu!!!
See