How do you ask for sex?

[litres46]

Whats your most successful way of asking for sex or letting partners/friends/strangers know that you are horny?

With casual partners I usually go with "can you give me a hand with something?" while rubbing my groin, sometimes with puppy dog eyes.
With more intimate partners I usually just grope them on the ass/crotch.

and second topic, whats the best way for someone else to ask you for sex?