I am doing a course, there are 11 people in this course, we have just come back AFTER lunch and the person next to me is eating a large bag of crisps, the person behind me also is and the teacher has just opened a bag and is chomping them. I feel like im in a farmyard, I want to bang all their heads together and grab all their crisp packets and throw them in the bin, AIBU . i have my period, maybe this could be adding to it or is it normal to find this soooo irritating