An almost identical thing happened to me and my ex in Corfu, we left a bar and she was as randy as hell, she was giving me a blow job when we noticed a man watching us, she really got turned on knowing this, suddenly she called to him and said do you want to join in, she sucked his cock then bent over and said fuck me, he had a huge cock and rammed it up her, she was going crazy as he fucked her, after about 5 minutes he pulled out and shot spunk all over arse.
I was coming back from the store one night with bags. In a dark alley, 5 guys surrounded me...I thought they were going to rob...but they quickly pulled up my coat and skirt and fingered my pussy...they held me back when I squirt...then, smiling, they straightened my clothes...they wished me a "good evening" and left....I was with bags in my hands all this time and stayed 😊