Did similar...years ago for someones bday we went on a pub crawl using a hired bus to get to the different pubs....I bought a packet of crisps in one pub and was eating them on the bus...one mate kept helping himself and ate most of them....next pub bought another packet and asked barman for the tabasco bottle....put a liberal amount in the packet and shook it around....my mate couldn't stand anything remotely hot or spicy....so I sat there eating them on way to next pub....he grabbed a bunch and shoved then in his mouth....took about 2 seconds for the reaction....
..which was impressive....coughing...choking ...swearing ....shouted what the fk was that....I said I like a lot of tobasco on my crisps....he was broken.....me I couldn't stop laughing...
....for some reason didn't try again..