when you make eye contact with someone, see or meet them, or engage in conversation with them for the first time, and you start to see them frequently.
“I literally talked to this kid once and now I see him everywhere, it really is the Bemma effect.”
Coined from How I Met Your Mother, Future Ted mentions the time new upstairs neighbors moved in, and proceeded to have loud sex on a regular basis, which he euphemistically describes as "playing the bagpipes" to his children. (November 2, 2009). It also can refer to f**k or f**king.