Okay guys,lets talk.
We all make mistakes and we all learn from others mistakes(not everybody sha) 
we have said things or done things in front of girls or guys that when we go back to our comfort zone we ll be like 'gosh,why did i say that!' or 'why did i do that'
what are those blunders u have committed infront of the opposite sex that u regret ever saying or doing?
For me(i have stopped o!):
-Looking at another girls behind when speaking to a girl (na wa for me)
-Using big grammar to get a girl ( na so so tianw dey full am
)
Lets hear yours........