I had that once, (not drugs) going and going to the point I got a fooking stitch
Had to stop then as I was sweating loads and was fooking knackered, she was enjoying it mind you lol.
When I woke up the next morning was still rock hard pitching a big tent out of the duvet pmsl.
Still couldnt cum pmsl, she tried wanking me etc but got major arm ache

Found out my drink was spiked by some mates with 2 viagra pills the night before at the xmas do