Here's a tip, Tesco customers - if you have to lean and stretch quite far to reach an item, because there's a big yellow barrier saying "do not enter" on it and a colleague staring at you with a "really?" kind of expression between you and it ... The item isn't for you right now! Try again later!
Here's another tip! If a member of staff in a supermarket says "Excuse me, that's there to stop you doing that!" the response of "Well I'll only be a minute" is Incorrect! The words you are looking for are "Sorry!" and "I'll go away now!" Hope this helps