As a dude, there are a few places I like to be touched:

• Nipples - not sure why, but I love being touched or sucked there
• The pelvic area where the leg joins up - I LOVE being kissed there
• Testicles - play with it any way you want, as long as it isn’t squeezing it should be fine
• During sex, a partner was lightly scratching my back while moaning. Made me finish on the spot.