My biggest Pet Peeve

My biggest pet peeve is when I am at the bowling alley and people do not use common courtesy when they are on the lanes.  What I am talking about is when people rush up to the lanes and do not wait for another bowler that was previously up to bowl.  I get very annoyed and upset, but I just sit back patiently and wait for this rude person to be done with their frame.  Nothing grinds my gears more than those instances.