Well here are my answers:
Cock;
1 Have you held another guy's cock?
Yes
2 Has another guy held your cock?
Yes
3 Can you lick your cock?
No
4 Has a sibling held your cock?
No
Ass;
5 Have you put a finger up your ass?
Yes
6 Have you put a finger up another guy's ass?
No
7 Has your cock been in another guy's ass
No
8 Have you had another guy's cock in your ass?
Yes
9 What is the largest item you have inserted in your ass?
Probably a cucumber? :O
10 What is the largest item someone else has inserted in your ass?
Their cock
Masturbation;
11 Has another guy masturbated you?
Yes
12 Have you masturbated another guy?
Yes
13 What is the most times you have masturbated in 24 hours?
20 as I can remember
14 What is the longest you have gone without masturbating?
I don't really know... 
I think 3-5 days due to medical reasons
Mouth;
15 Has your cock been in another guy's mouth?
Yes
16 Have you had another guy's cock in your mouth?
Yes
17 What parts of other people, Guy or Gal, have been in your mouth?
Well from guy, nipples, tongue. From girl, I did a oral so that and nipples, tongue, and finger non sexual way
18 What is the strangest thing you have had in your mouth?
I'm using my mouth to hold things, so i think an ink cartridge for printer... I had black tongue for a few days :S
Cum;
19 Have you swallowed your own cum?
Yes
20 Have you swallowed someone elses cum?
Yes
21 Have you had someone elses cum on your face?
Yes
22 Have you had someone elses cum elsewhere on your body? If so, Where?
My back, ass
23 Can you cum on your own face?
Yes
Naked;
24 Have you slept with another guy naked?
Nope
25 Have you seen other guys naked, (except in changing rooms etc)?
Yes
26 Have you stripped another guy?
Just helped
27 Have you been stripped by another guy?
No
28 Have you been seen naked by gals? If so how many?
I think 4-5
29 Where is the most public place you have been naked?
School
and finally;
30 Do you dream of doing sexual things with other guys? If so what?
Hahaha anything you can think of