A dick that curves upwards, fat around the base and tapering to a small head is my perfect dick.
Think of Simon Jacobi in The English Student (BelAmi)

I never changed from briefs to boxers. Growing up in Australia in the 80s, no one wore boxers. Everyone wore basic coloured hipster briefs (really boring). However, I desperately wanted to change to "tighty whities" briefs.
The only guys I ever saw wearing them were on American movies and TV shows and I thought they were so sexy and mature. Little did I  know that every American boy was trying not to wear them and change to boxers instead.
When I was about 15, I managed to convince my mum to buy me briefs that had a fly front. Initially she bought me coloured Jockeys because she thought these were more "modern". But the next time I needed new underwear, she  bought a 5 pack of Classic Jockey Y-fronts because they were cheaper. I was so excited - I couldn't wait to get home and tear open the pack so I could try them on. They are still my favourite type of underwear.

Bulges are the best part of underwear.
This is a pic I've seen on hundreds of tumblr sites - it's so very hot!

I don't go chasing underwear to sniff, but when the opportunity presents itself, I'll invariably lift the underwear to my nose. It happens without me making a conscious decision to do it. Admittedly I've never encountered gross underwear, so thankfully I've never been disgusted by my actions. But I have enjoyed the aroma of some hot guys 

Excellent question. If he's a really fit guy, it doesn't matter what brand he's wearing - it's enough just to have caught a glimpse.

But, to make me instantly fall in love with that guy, I want to see a pair of Jockey Y-fronts.

Forgive me Father, for I have sinned  >:D

The first time was when I stayed at a mate's house and I slept in his brother's room. When I was making the bed the next morning I found a cum stained pair of pale blue hipster briefs pushed behind the mattress. I just had to take them and figured he wouldn't ask if anyone had seen his cum rag.

A few years later, I was staying with a straight couple, and I had the biggest crush on the gorgeous boyfriend. I saw that his girlfriend had done some laundry and there were multiple pairs of his trunks hanging on the clothes line. I decided I would wash some of my clothes and hand them out as well. Then, would you believe it? When I took the dry washing off the line, I had accidentally taken some of his underpants and mixed them up with mine. I confess to doing some dreadful things in those trunks over several months. He looked so hot when I saw him wearing them  - I still have a pair as a trophy.

Jockey, CK and Bonds

Briefs are best in white.
Boxer briefs are best in black.

I've swiped a few pairs from the clothesline of a mate but never asked him.

In a freaky twist, he once asked me for a pair of mine!!!

He'd worn his boxers in the pool at a party but then he had to go to straight to his girlfriend's parents place for dinner. He asked if I had a spare pair he could wear. I nearly fainted before happily handing over a clean pair of briefs. He returned them, freshly laundered unfortunately, the next week.

I haven't worn them since - they sit amongst some of my other trophies.

When lounging at home with no one else bothering me I always get down to my undies. Watching TV, on the Net, cleaning, working - all are better when you're just in your underwear.