Is there a way of implementing a rule in mysql which will block updates effecting over 10 rows?

For instance, lets say i have tbl1 with 50,000 rows and I do 

```
update tbl1 set tb1.name = 'bob'

```

Then quickly follow on with a "OH NO! I FORGOT THE WHERE!?!?".

The reason I ask is because a junior developer made this mistake and now its repair time :(.