<span>I have to talk to you. I appreciate your humor but lately you've really been putting me down in front of my friends, and it's been bothering me. I know you don't mean it, but you've been hurting my feelings and making me feel insignificant in front of my friends. Do you think you can try not to do that anymore?</span>
Cross-contamination refer to a condition where microorganisms are unintended transferred from one subject to another and causing harmful effect to them
One thing that is NOT an example of cross-contamination is : food is prepared one day in advance
no you can not be pregnant if you get your period late.