As stated, the 'çommon sence' thing is to get used to it. just like ya can't jump up and run a marathon ya cant hop on a bike and do 100 miles. ya gotta train for it. When you was a kid it didn't matter cause ya rode a bike every where and ya but was tough and well seasoned and not only that ya were probally lots lighter then.
Thanks to modern technology good bike seats now come in a huge variety of styles, shapes and coverings. Just like a good pair of boots, the best thing is go to a bike shop and get fitted for a seat. Bring ya bike with ya and one of the skinny cyclist types behind the counter will gladly assist ya, and help ya choose a seat that fits ya tush comfortably.
To avoid pressure on ya more sensitive Male parts: raise ya handle bars up and tilt ya seat down slightly in front. This transfers ya weight further back onto less........... touchy areas.:tinysmile_fatgrin_t
Lastly remember its bike riding, ya know, fun, and so simple ya 8 year old can do it. Just use a lil common sence and have fun
