No.
No. No. Just...no.
The only things that are acceptable to go in a martini are gin, vodka, dry vermouth, (dry Lillet is also acceptable), and an onion, olive, or lemon peel.
The only things that should go in a margarita are tequila, triple sec, and lime juice (sweetened or fresh-squeezed) and salt for the rim.
The only things that should go in coffee is more coffee. :bergman: