noun
instant sex; easy lay; having sex right after meeting
Vulgar slang for having sex immediately upon meeting, often implying casual or promiscuous behavior. Used in adult contexts.
See also: はめる
出会い系で即ハメを狙う男は多い。
Many guys on dating apps are just looking for an easy lay.
彼女は即ハメなんて絶対にしない。
She would never have sex with someone right after meeting them.