To 'drop your wallet' is for a male to come or orgasm. Usually used when referring to almost coming or prematurely ejaculating.
“The new lingerie my wife bought is so hot I dropped my wallet in seconds.”
“Michelle was so horny looking in that bikini that I almost dropped my wallet right there on the beach.”
“Michelle was so horny looking in that bikini that I almost dropped my wallet right there on the beach.”
by camjoo May 23, 2005