That depends on the guy. If you look at different men at that age they don't all look the same now do they? Same with their genitals.
A normal 24 year old would have a penis of between 5 and 7 inches long.
24 inches
when one guy puts his penis in your vagina and one guy puts his penis in your anus (butt hole)
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You get on your knees and begin to suck his penis for a long time til it makes bop noise
The average for a adult male is 5-6 inches.
Ask him. Ask his ex-girlfriend. Ask somebody who knows.
Yes.
The thought that girls like guys with a long penis is generally wrong. To most girls, penis size makes little to no difference. As a guy you can imagine your penis size to be about as important to a girl, as the girl's breast size is to you. Do you actually care whether a girl has a big chest or not? Most guys don't. So why should girls care whether you have a big penis or not?
No. Cause I am a 13 years old boy and it is 17cm long
If your partner really cares about you, then absolutely nothing. Besides, as long as you know how to use it, she'll be happy. I'd rather be with a guy with a small penis that knows how to use it than someone with a big penis who has no idea what he's doing.
15 - 10 inches long and 7 inches in girth erect, 7.5 inches long flacid.