有咩英文字mix up左會引致嚴重後果?

Pass out and pass away~
Pass out= faint
Pass away: die

Fashion brand name FCUK

I think the following confusion can cause serious consequence：
If you were shopping and decided to buy an item, the salesperson promised to give you a special discount by saying 50% off.
When you prepared to pay you discovered the amount on the bill was totally different from the price quoted by the salesperson.
The reason is, the salesperson made up the pronunciation of 15% off (Fifteen) to 50% off (Fifty).
The above story is very common but the wrong pronunciation can really cause a big misunderstanding !!!

2011-08-08 15:15:37 補充：
Correction - the salesperson mixed-up the pronunciation not/not made up ! Sorry

So, you're interested in human body.
Here's one for you.

glance = 一瞥
glans = 陰莖頭, 陰蒂頭

The typical one:

I'll try my breast.

versus

I'll try my best.